<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:02f1d5fc-e3a7-4b2e-a586-ca0f805a4087,g:93017cb6-caea-4e0b-bb0a-da416f1a0cae-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.digi.com/role/CondensedConsolidatedStatementsofOperationsUnaudited" xlink:type="simple" xlink:href="dgii-20240630.xsd#CondensedConsolidatedStatementsofOperationsUnaudited"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/CondensedConsolidatedStatementsofOperationsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c389320f-35a4-4023-967e-5588ed0ac7f0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_3a92a934-f967-496e-8c0d-03dc7bd287f6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c389320f-35a4-4023-967e-5588ed0ac7f0" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_3a92a934-f967-496e-8c0d-03dc7bd287f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_df08155e-dcd2-46c8-a0b7-4f85cf0aca88" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c389320f-35a4-4023-967e-5588ed0ac7f0" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_df08155e-dcd2-46c8-a0b7-4f85cf0aca88" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_0e346688-1101-4c95-969f-80d089bd0083" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_1d21bd4e-99ad-47e5-b864-7469532a950b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_0e346688-1101-4c95-969f-80d089bd0083" xlink:to="loc_us-gaap_Revenues_1d21bd4e-99ad-47e5-b864-7469532a950b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_c1f8dcb7-2706-45e5-abd7-d5b12649d238" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_0e346688-1101-4c95-969f-80d089bd0083" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_c1f8dcb7-2706-45e5-abd7-d5b12649d238" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_3243ec5d-a74b-4ae6-806e-7642713b10a8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_563ee009-d48b-450b-81b3-49f8a88cd73b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_3243ec5d-a74b-4ae6-806e-7642713b10a8" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_563ee009-d48b-450b-81b3-49f8a88cd73b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dgii_OtherIncomeNet_40c6f248-d701-4622-adf4-f57eee5e983a" xlink:href="dgii-20240630.xsd#dgii_OtherIncomeNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_bd820c3f-a5bb-475d-aded-aeae3851cf2d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_dgii_OtherIncomeNet_40c6f248-d701-4622-adf4-f57eee5e983a" xlink:to="loc_us-gaap_InterestExpense_bd820c3f-a5bb-475d-aded-aeae3851cf2d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_6abaffb1-1d24-4a55-b1c0-c83377f62149" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_dgii_OtherIncomeNet_40c6f248-d701-4622-adf4-f57eee5e983a" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_6abaffb1-1d24-4a55-b1c0-c83377f62149" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_9cb139bc-09bc-4a5d-9091-fb10e91b8e4c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_dgii_OtherIncomeNet_40c6f248-d701-4622-adf4-f57eee5e983a" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_9cb139bc-09bc-4a5d-9091-fb10e91b8e4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_77c14905-d8ef-4b2b-9e08-047aace092b5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldAmortization_1034aa51-74a1-45e9-b611-e393e926d2a9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfGoodsAndServicesSoldAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSold_77c14905-d8ef-4b2b-9e08-047aace092b5" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSoldAmortization_1034aa51-74a1-45e9-b611-e393e926d2a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dgii_CostOfGoodsAndServicesSoldExcludingAmortization_01a5d650-feef-468c-a702-1470ad69a808" xlink:href="dgii-20240630.xsd#dgii_CostOfGoodsAndServicesSoldExcludingAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSold_77c14905-d8ef-4b2b-9e08-047aace092b5" xlink:to="loc_dgii_CostOfGoodsAndServicesSoldExcludingAmortization_01a5d650-feef-468c-a702-1470ad69a808" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_37799d01-72d7-4f9d-8c03-e5c372c27bd6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_4531b3b5-328d-498d-b9f7-749a26271ba2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_37799d01-72d7-4f9d-8c03-e5c372c27bd6" xlink:to="loc_us-gaap_GrossProfit_4531b3b5-328d-498d-b9f7-749a26271ba2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_89202314-b121-4a10-aa15-86da6608219f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_37799d01-72d7-4f9d-8c03-e5c372c27bd6" xlink:to="loc_us-gaap_OperatingExpenses_89202314-b121-4a10-aa15-86da6608219f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_4d3d0895-9135-44c6-a170-5b8efa0df668" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_d47aa8ac-7a4e-45cf-b002-d0f6334deb4d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4d3d0895-9135-44c6-a170-5b8efa0df668" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_d47aa8ac-7a4e-45cf-b002-d0f6334deb4d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_12d883ad-2b8b-4343-8942-032f5559657d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4d3d0895-9135-44c6-a170-5b8efa0df668" xlink:to="loc_us-gaap_SellingAndMarketingExpense_12d883ad-2b8b-4343-8942-032f5559657d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_70f44213-9bc5-48de-ae8b-fa30b8ace8e0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_4d3d0895-9135-44c6-a170-5b8efa0df668" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_70f44213-9bc5-48de-ae8b-fa30b8ace8e0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/CondensedConsolidatedStatementsofComprehensiveLossIncomeUnaudited" xlink:type="simple" xlink:href="dgii-20240630.xsd#CondensedConsolidatedStatementsofComprehensiveLossIncomeUnaudited"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/CondensedConsolidatedStatementsofComprehensiveLossIncomeUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_584209bf-ca88-4247-9268-12cf8b6f1c37" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_35efb93b-1784-471c-8781-fd696de4c903" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_584209bf-ca88-4247-9268-12cf8b6f1c37" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_35efb93b-1784-471c-8781-fd696de4c903" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_c454782b-2660-4cb0-bc9e-c577aa152316" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_df6f7d98-68a4-457e-aa3e-7acbaf204dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_c454782b-2660-4cb0-bc9e-c577aa152316" xlink:to="loc_us-gaap_NetIncomeLoss_df6f7d98-68a4-457e-aa3e-7acbaf204dc5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_a8aa1adb-3069-4147-ae85-7d9d36f7acaa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_c454782b-2660-4cb0-bc9e-c577aa152316" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_a8aa1adb-3069-4147-ae85-7d9d36f7acaa" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="simple" xlink:href="dgii-20240630.xsd#CondensedConsolidatedBalanceSheetsUnaudited"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_29890312-b8d6-4619-9fcf-d6f0f7a941bb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_5dd4da78-81be-47c9-b09d-828603c5ec4e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_29890312-b8d6-4619-9fcf-d6f0f7a941bb" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_5dd4da78-81be-47c9-b09d-828603c5ec4e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_d1bbf5c5-4668-4ca9-a375-8fdfc3088ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_29890312-b8d6-4619-9fcf-d6f0f7a941bb" xlink:to="loc_us-gaap_InventoryNet_d1bbf5c5-4668-4ca9-a375-8fdfc3088ed5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_4181ae8e-a7a4-42ec-b532-0df3b734f1d9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_29890312-b8d6-4619-9fcf-d6f0f7a941bb" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_4181ae8e-a7a4-42ec-b532-0df3b734f1d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5dd0e780-c41d-40ec-9370-5f51179d2d90" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_29890312-b8d6-4619-9fcf-d6f0f7a941bb" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5dd0e780-c41d-40ec-9370-5f51179d2d90" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_574d8594-a84d-4c6f-87bc-bdeef9e38e7a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_7b7f9435-4803-41ee-b194-c2e176a8cd47" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_574d8594-a84d-4c6f-87bc-bdeef9e38e7a" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_7b7f9435-4803-41ee-b194-c2e176a8cd47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_3d914125-30a1-477a-8947-2aec938c9828" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockValue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_574d8594-a84d-4c6f-87bc-bdeef9e38e7a" xlink:to="loc_us-gaap_TreasuryStockValue_3d914125-30a1-477a-8947-2aec938c9828" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_8ecd26e9-ffb3-4fb0-99cf-745a6cde2c59" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_574d8594-a84d-4c6f-87bc-bdeef9e38e7a" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_8ecd26e9-ffb3-4fb0-99cf-745a6cde2c59" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_30d20f21-9530-4543-abe8-fbcc99c93c91" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_574d8594-a84d-4c6f-87bc-bdeef9e38e7a" xlink:to="loc_us-gaap_CommonStockValue_30d20f21-9530-4543-abe8-fbcc99c93c91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_30447b53-74b3-409f-8618-c8ec3ea94673" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_574d8594-a84d-4c6f-87bc-bdeef9e38e7a" xlink:to="loc_us-gaap_PreferredStockValue_30447b53-74b3-409f-8618-c8ec3ea94673" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_904d7d5f-f0c0-4396-8388-9dadd935678b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_574d8594-a84d-4c6f-87bc-bdeef9e38e7a" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_904d7d5f-f0c0-4396-8388-9dadd935678b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_b65bca5c-4f5c-4dce-8a68-e4319890bbc9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_9f4498b4-94e2-45a5-bc11-a3cac8627fab" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_b65bca5c-4f5c-4dce-8a68-e4319890bbc9" xlink:to="loc_us-gaap_StockholdersEquity_9f4498b4-94e2-45a5-bc11-a3cac8627fab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_ffc58afe-99c9-4896-a219-f0491e156cf5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_b65bca5c-4f5c-4dce-8a68-e4319890bbc9" xlink:to="loc_us-gaap_Liabilities_ffc58afe-99c9-4896-a219-f0491e156cf5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpense_a13a7cba-277a-4a5d-87d1-2ee09c573b24" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpense_a13a7cba-277a-4a5d-87d1-2ee09c573b24" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_ac89b34a-7bbe-4545-b5f6-3da573d0a4d3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:to="loc_us-gaap_Goodwill_ac89b34a-7bbe-4545-b5f6-3da573d0a4d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_f47ce187-6704-4f31-b9bd-bff8d8384bd1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:to="loc_us-gaap_AssetsCurrent_f47ce187-6704-4f31-b9bd-bff8d8384bd1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_a92a003c-f569-496e-a1b3-402c823959ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_a92a003c-f569-496e-a1b3-402c823959ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_9c067884-fe1f-430f-941c-3aa517dddf93" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_9c067884-fe1f-430f-941c-3aa517dddf93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_f50b36fb-bf3b-41ed-82e4-a82156ab0fa3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_f50b36fb-bf3b-41ed-82e4-a82156ab0fa3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_23531509-f840-4d11-bc73-b62c7d056316" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77ffc843-4ffa-4daf-8414-95d542bdcab7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_23531509-f840-4d11-bc73-b62c7d056316" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_762b790d-1ce9-4904-bb33-998f5c729929" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_762b790d-1ce9-4904-bb33-998f5c729929" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_c6dd8052-0864-4366-9383-42a135e108e3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:to="loc_us-gaap_LongTermDebtCurrent_c6dd8052-0864-4366-9383-42a135e108e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_dbf7609d-7f06-4c47-a8a4-0b3b38b57fff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_dbf7609d-7f06-4c47-a8a4-0b3b38b57fff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_fd4082a8-cb6d-4e75-99a4-aa6af754c3d5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:to="loc_us-gaap_AccountsPayableCurrent_fd4082a8-cb6d-4e75-99a4-aa6af754c3d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_b350f24e-e094-475a-a7df-66370c7bedc2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_b350f24e-e094-475a-a7df-66370c7bedc2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_f1fc44d1-d098-4ef2-b051-770ae8e3d62f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_f1fc44d1-d098-4ef2-b051-770ae8e3d62f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_6c2b23ec-cf2d-4047-bc1d-8bc3c1b369be" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxesPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_baac3374-fac4-43d5-b36b-2e30c8843af9" xlink:to="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_6c2b23ec-cf2d-4047-bc1d-8bc3c1b369be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_f46be4f1-8f55-43ed-b45e-a253b0dcd039" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_5a046d58-541b-42d5-8043-7bdf879b3aee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f46be4f1-8f55-43ed-b45e-a253b0dcd039" xlink:to="loc_us-gaap_LiabilitiesCurrent_5a046d58-541b-42d5-8043-7bdf879b3aee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_fc18f909-b4b3-4b06-b2b9-4a2855f3c9e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedIncomeTaxesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f46be4f1-8f55-43ed-b45e-a253b0dcd039" xlink:to="loc_us-gaap_AccruedIncomeTaxesNoncurrent_fc18f909-b4b3-4b06-b2b9-4a2855f3c9e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_98401b18-60bf-40d4-8231-d15549d324c0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f46be4f1-8f55-43ed-b45e-a253b0dcd039" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_98401b18-60bf-40d4-8231-d15549d324c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_07ee1107-a944-455d-8f67-bb7b6cdd5069" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f46be4f1-8f55-43ed-b45e-a253b0dcd039" xlink:to="loc_us-gaap_LongTermDebt_07ee1107-a944-455d-8f67-bb7b6cdd5069" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_5b088358-9256-4e21-b6e7-42aedfe06f6d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f46be4f1-8f55-43ed-b45e-a253b0dcd039" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_5b088358-9256-4e21-b6e7-42aedfe06f6d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_c6221bdf-afc3-4ada-8cff-f89759fff4ff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f46be4f1-8f55-43ed-b45e-a253b0dcd039" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_c6221bdf-afc3-4ada-8cff-f89759fff4ff" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="simple" xlink:href="dgii-20240630.xsd#CondensedConsolidatedStatementsofCashFlowsUnaudited"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f608e5ce-aba0-4c4b-af8e-4ec783ed44a2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfIntangibleAssets_836f3393-e27f-4a42-b2d8-5ea4e8f65514" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromSaleOfIntangibleAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f608e5ce-aba0-4c4b-af8e-4ec783ed44a2" xlink:to="loc_us-gaap_ProceedsFromSaleOfIntangibleAssets_836f3393-e27f-4a42-b2d8-5ea4e8f65514" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_87cc350f-84cf-442b-9a11-6b8b6b1fdf2e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f608e5ce-aba0-4c4b-af8e-4ec783ed44a2" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_87cc350f-84cf-442b-9a11-6b8b6b1fdf2e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e68db665-8d3f-4a32-ae5f-97ece28cef2b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6af86910-03ea-42fa-b9ae-3b9b7ea9fecd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e68db665-8d3f-4a32-ae5f-97ece28cef2b" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6af86910-03ea-42fa-b9ae-3b9b7ea9fecd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_66d40e2e-f14d-4b1f-9bb2-b9ed14806020" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e68db665-8d3f-4a32-ae5f-97ece28cef2b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_66d40e2e-f14d-4b1f-9bb2-b9ed14806020" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_b08b11e1-4a94-4007-91b7-c9e73c69c3a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e68db665-8d3f-4a32-ae5f-97ece28cef2b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_b08b11e1-4a94-4007-91b7-c9e73c69c3a5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_831d4150-e54a-4432-8288-b00a5d481dc1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e68db665-8d3f-4a32-ae5f-97ece28cef2b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_831d4150-e54a-4432-8288-b00a5d481dc1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4e068387-e486-4198-9545-4c7325967224" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_52364395-6eae-4399-9bbf-f37c6dc3ca5d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4e068387-e486-4198-9545-4c7325967224" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_52364395-6eae-4399-9bbf-f37c6dc3ca5d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_88454daf-15cb-495b-8706-6cee2a54927e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4e068387-e486-4198-9545-4c7325967224" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_88454daf-15cb-495b-8706-6cee2a54927e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockPlans_4ae9c861-ff74-4165-9ca2-c3bd5f7cb768" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromStockPlans"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4e068387-e486-4198-9545-4c7325967224" xlink:to="loc_us-gaap_ProceedsFromStockPlans_4ae9c861-ff74-4165-9ca2-c3bd5f7cb768" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_3c552fdf-5add-434d-9005-b2e13868f246" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4e068387-e486-4198-9545-4c7325967224" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_3c552fdf-5add-434d-9005-b2e13868f246" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_a2f9340d-786d-43ca-a4f6-9389ae87f23d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4e068387-e486-4198-9545-4c7325967224" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_a2f9340d-786d-43ca-a4f6-9389ae87f23d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapital_40d86504-cfe2-4524-841a-b5ab317ea810" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOperatingCapital"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapital_40d86504-cfe2-4524-841a-b5ab317ea810" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_00583517-eeb1-4c62-8acd-c01acf8598b2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_00583517-eeb1-4c62-8acd-c01acf8598b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_2ce61b2e-b3b5-4308-8e0f-3ae54f4940a9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentForAmortization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_AdjustmentForAmortization_2ce61b2e-b3b5-4308-8e0f-3ae54f4940a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_2b5bfa97-da94-4a26-8324-8fd7b8e0315f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_ShareBasedCompensation_2b5bfa97-da94-4a26-8324-8fd7b8e0315f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_801a6162-d3c1-41b3-9da2-1ae376a52beb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_801a6162-d3c1-41b3-9da2-1ae376a52beb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementExpense_5f5698be-420d-4ed3-b1b5-83cdb54cc409" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationSettlementExpense"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_LitigationSettlementExpense_5f5698be-420d-4ed3-b1b5-83cdb54cc409" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_620f605a-0f81-464f-b110-26ea93874b24" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_Depreciation_620f605a-0f81-464f-b110-26ea93874b24" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_146fab63-9abf-4dc0-9c1a-7093db1951e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_NetIncomeLoss_146fab63-9abf-4dc0-9c1a-7093db1951e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_b47325e9-7477-42a3-9e69-938f1fc2a3c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_271cd509-7eed-4f3f-9757-6d99adb5bda3" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_b47325e9-7477-42a3-9e69-938f1fc2a3c5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="dgii-20240630.xsd#EarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_222822ca-381b-4e22-8607-1b334e79abef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_84e3574a-dbad-46ff-8fb9-93f0d73ff329" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_222822ca-381b-4e22-8607-1b334e79abef" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_84e3574a-dbad-46ff-8fb9-93f0d73ff329" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_ee5c071f-adba-457d-bbee-db0af65115de" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_222822ca-381b-4e22-8607-1b334e79abef" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_ee5c071f-adba-457d-bbee-db0af65115de" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/SelectedBalanceSheetDataDetails" xlink:type="simple" xlink:href="dgii-20240630.xsd#SelectedBalanceSheetDataDetails"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/SelectedBalanceSheetDataDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_6b45ac49-243b-49b4-bb60-737902039713" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_b36ab3c1-0d5d-45a7-acc1-81761a19e616" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_6b45ac49-243b-49b4-bb60-737902039713" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_b36ab3c1-0d5d-45a7-acc1-81761a19e616" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_6fe92881-383a-43a9-b375-3bfe8e411d74" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_6b45ac49-243b-49b4-bb60-737902039713" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_6fe92881-383a-43a9-b375-3bfe8e411d74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dgii_AllowanceforFutureReturnsandPricingAdjustments_da5ff7f1-5efd-4ec6-9f7e-0f51dcee8778" xlink:href="dgii-20240630.xsd#dgii_AllowanceforFutureReturnsandPricingAdjustments"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_6b45ac49-243b-49b4-bb60-737902039713" xlink:to="loc_dgii_AllowanceforFutureReturnsandPricingAdjustments_da5ff7f1-5efd-4ec6-9f7e-0f51dcee8778" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_340a7593-2fd2-4832-b709-35e4e4f9a63a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_50854a06-203f-4d3d-93de-ddd6a067027e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_340a7593-2fd2-4832-b709-35e4e4f9a63a" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_50854a06-203f-4d3d-93de-ddd6a067027e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_87692251-f747-41ba-bb13-93b89a7b74bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_340a7593-2fd2-4832-b709-35e4e4f9a63a" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_87692251-f747-41ba-bb13-93b89a7b74bd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_03af678f-bb64-4fc4-aac8-515c22a757b4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_340a7593-2fd2-4832-b709-35e4e4f9a63a" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_03af678f-bb64-4fc4-aac8-515c22a757b4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/GoodwillandOtherIdentifiableIntangibleAssetsNetDetails" xlink:type="simple" xlink:href="dgii-20240630.xsd#GoodwillandOtherIdentifiableIntangibleAssetsNetDetails"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/GoodwillandOtherIdentifiableIntangibleAssetsNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_fbe3f0b3-812b-44ba-9229-42c9613d48ba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_90e4b627-ffc0-427a-87de-618a69ff201c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_fbe3f0b3-812b-44ba-9229-42c9613d48ba" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_90e4b627-ffc0-427a-87de-618a69ff201c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_91988904-07d5-4326-83aa-808500c8c65f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_fbe3f0b3-812b-44ba-9229-42c9613d48ba" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_91988904-07d5-4326-83aa-808500c8c65f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/LeasesSupplementalBalanceSheetDetails" xlink:type="simple" xlink:href="dgii-20240630.xsd#LeasesSupplementalBalanceSheetDetails"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/LeasesSupplementalBalanceSheetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dgii_LeaseLiability_f75cc64a-9d83-4822-88e2-15450ec7df3e" xlink:href="dgii-20240630.xsd#dgii_LeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_384d346b-38e8-46bc-be78-a2dd3c87c69a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_dgii_LeaseLiability_f75cc64a-9d83-4822-88e2-15450ec7df3e" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_384d346b-38e8-46bc-be78-a2dd3c87c69a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_61abd9c1-40a2-49ae-8370-6fbb4e02fc8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_dgii_LeaseLiability_f75cc64a-9d83-4822-88e2-15450ec7df3e" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_61abd9c1-40a2-49ae-8370-6fbb4e02fc8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_dgii_LeaseRightOfUseAsset_9f1e425e-eec5-42c7-834e-4c6d913851b7" xlink:href="dgii-20240630.xsd#dgii_LeaseRightOfUseAsset"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_7e1b8692-a50b-4e4a-8903-25798deb72df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_dgii_LeaseRightOfUseAsset_9f1e425e-eec5-42c7-834e-4c6d913851b7" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_7e1b8692-a50b-4e4a-8903-25798deb72df" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/LeasesLeaseCostDetails" xlink:type="simple" xlink:href="dgii-20240630.xsd#LeasesLeaseCostDetails"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/LeasesLeaseCostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_1144078f-bfde-4355-b2ae-e3f6ca6be5db" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_dc8a5387-8758-4b35-9791-f1f4bb67c8e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_1144078f-bfde-4355-b2ae-e3f6ca6be5db" xlink:to="loc_us-gaap_OperatingLeaseCost_dc8a5387-8758-4b35-9791-f1f4bb67c8e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_ec4a1a19-a664-4189-97bb-a4d453b24748" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_1144078f-bfde-4355-b2ae-e3f6ca6be5db" xlink:to="loc_us-gaap_VariableLeaseCost_ec4a1a19-a664-4189-97bb-a4d453b24748" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermLeaseCost_e4385a0f-8845-4b59-a862-e5f6f1f3ba72" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShortTermLeaseCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_1144078f-bfde-4355-b2ae-e3f6ca6be5db" xlink:to="loc_us-gaap_ShortTermLeaseCost_e4385a0f-8845-4b59-a862-e5f6f1f3ba72" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/LeasesMaturityofOperatingLeaseLiabilityDetails" xlink:type="simple" xlink:href="dgii-20240630.xsd#LeasesMaturityofOperatingLeaseLiabilityDetails"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/LeasesMaturityofOperatingLeaseLiabilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6facac16-3330-4ada-b627-4af93524b3e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_6b4e1ea4-c754-4cba-b38c-15773cee39ad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6facac16-3330-4ada-b627-4af93524b3e8" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_6b4e1ea4-c754-4cba-b38c-15773cee39ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_3c68bbf3-f844-4bc2-9310-636cac63e2ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6facac16-3330-4ada-b627-4af93524b3e8" xlink:to="loc_us-gaap_OperatingLeaseLiability_3c68bbf3-f844-4bc2-9310-636cac63e2ca" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/LeasesMaturityofOperatingLeaseLiabilityDetails_1" xlink:type="simple" xlink:href="dgii-20240630.xsd#LeasesMaturityofOperatingLeaseLiabilityDetails_1"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/LeasesMaturityofOperatingLeaseLiabilityDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_78af8d4a-836a-4a61-8159-89e45031ec60" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_78af8d4a-836a-4a61-8159-89e45031ec60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_c0c01435-149b-40b0-9621-be46ce113dd3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_c0c01435-149b-40b0-9621-be46ce113dd3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_d2b0a75f-cd79-499e-b460-c4cb63ce51c3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_d2b0a75f-cd79-499e-b460-c4cb63ce51c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_bb7b6337-5f41-4b4e-be3e-e9b68c37cf93" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_bb7b6337-5f41-4b4e-be3e-e9b68c37cf93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_c6c5ff1e-82ef-4a45-ad84-eac5ef59ddda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_c6c5ff1e-82ef-4a45-ad84-eac5ef59ddda" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_b610ac91-cc83-483f-afcb-75bfee48feb6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_b610ac91-cc83-483f-afcb-75bfee48feb6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_917f6100-02b3-4739-a6fd-024f15296dc8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ccdc6d9-eb5c-4f9f-8eec-74d2bfb2437a" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_917f6100-02b3-4739-a6fd-024f15296dc8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.digi.com/role/StockBasedCompensationStockBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="dgii-20240630.xsd#StockBasedCompensationStockBasedCompensationExpenseDetails"/>
  <link:calculationLink xlink:role="http://www.digi.com/role/StockBasedCompensationStockBasedCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_677012bd-9094-4f9e-8c5c-ae1ecb9c8aa8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_b1d38b72-8194-480d-af47-4a25e89a09ae" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_677012bd-9094-4f9e-8c5c-ae1ecb9c8aa8" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_b1d38b72-8194-480d-af47-4a25e89a09ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_38dffa10-e9eb-42d8-a9c1-1e30d3db8394" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_677012bd-9094-4f9e-8c5c-ae1ecb9c8aa8" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_38dffa10-e9eb-42d8-a9c1-1e30d3db8394" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
