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  <xs:element id="dgii_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfHoursPerWeekEmployed" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfHoursPerWeekEmployed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dgii_BaseRateElectionDomain" abstract="true" name="BaseRateElectionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_IoTSolutionsMember" abstract="true" name="IoTSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensation" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_ShareBasedCompensationEmployeeStockPurchasePlanSharesAvailableForFuturePurchase" abstract="false" name="ShareBasedCompensationEmployeeStockPurchasePlanSharesAvailableForFuturePurchase" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dgii_SalesRevenueGoodsNetExportedMember" abstract="true" name="SalesRevenueGoodsNetExportedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_StandardSoftwareWarrantyAccrualTermMaximum" abstract="false" name="StandardSoftwareWarrantyAccrualTermMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dgii_CostOfGoodsAndServicesSoldExcludingAmortization" abstract="false" name="CostOfGoodsAndServicesSoldExcludingAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_PaymentstoAcquirePropertyPlantandEquipmentbySegmentTableTextBlock" abstract="false" name="PaymentstoAcquirePropertyPlantandEquipmentbySegmentTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dgii_OpengearMember" abstract="true" name="OpengearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_CustomerWithContractLengthOfContract" abstract="false" name="CustomerWithContractLengthOfContract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dgii_SwinglineSubfacilityMember" abstract="true" name="SwinglineSubfacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_TimingOfContingentConsiderationAxis" abstract="true" name="TimingOfContingentConsiderationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dgii_DefinedContributionPlanNatureOfEmployerMatchAxis" abstract="true" name="DefinedContributionPlanNatureOfEmployerMatchAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dgii_StandardProductWarrantyAccrualTermMinimum" abstract="false" name="StandardProductWarrantyAccrualTermMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dgii_DocumentAndEntityInformationAbstract" abstract="true" name="DocumentAndEntityInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dgii_ExercisePriceRangeOneMember" abstract="true" name="ExercisePriceRangeOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_HaxiotMember" abstract="true" name="HaxiotMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_TimingOfContingentConsiderationDomain" abstract="true" name="TimingOfContingentConsiderationDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_EarnOutPaymentsMember" abstract="true" name="EarnOutPaymentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_ExercisePriceRangeFiveMember" abstract="true" name="ExercisePriceRangeFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_DefinedContributionPlanNatureOfEmployerMatchDomain" abstract="true" name="DefinedContributionPlanNatureOfEmployerMatchDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_HalfEmployerMatchMember" abstract="true" name="HalfEmployerMatchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_InfrastructureMgmtMember" abstract="true" name="InfrastructureMgmtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_VentusMember" abstract="true" name="VentusMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_November12021CreditAgreementMember" abstract="true" name="November12021CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_PriorCreditFacilityMember" abstract="true" name="PriorCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_FederalFundsRateMember" abstract="true" name="FederalFundsRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_DimOnOffInc.Member" abstract="true" name="DimOnOffInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_ReserveForFutureReturnsAndPricingAdjustmentsMember" abstract="true" name="ReserveForFutureReturnsAndPricingAdjustmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetTangibleAssetsAcquiredLiabilitiesAssumed" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetTangibleAssetsAcquiredLiabilitiesAssumed" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_IoTProductsandServicesMember" abstract="true" name="IoTProductsandServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_December222021CreditAgreementMember" abstract="true" name="December222021CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_A2022Member" abstract="true" name="A2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_ExercisePriceRangeThreeMember" abstract="true" name="ExercisePriceRangeThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_EffectiveIncomeTaxRateReconciliationCapitalLossExpiration" abstract="false" name="EffectiveIncomeTaxRateReconciliationCapitalLossExpiration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_EffectiveIncomeTaxRateReconciliationDeferredBalanceSheetRemeasurementAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationDeferredBalanceSheetRemeasurementAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_CreditAgreementDomain" abstract="true" name="CreditAgreementDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_NumberOfCustomerRepresentingOverTenPercentOfConsolidatedNetSales" abstract="false" name="NumberOfCustomerRepresentingOverTenPercentOfConsolidatedNetSales" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dgii_ExercisePriceRangeSixMember" abstract="true" name="ExercisePriceRangeSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_RightOfUseAssetObtainedInExchangeforLeaseLiabilityAbstract" abstract="true" name="RightOfUseAssetObtainedInExchangeforLeaseLiabilityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dgii_AllowanceforFutureReturnsandPricingAdjustments" abstract="false" name="AllowanceforFutureReturnsandPricingAdjustments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_LeaseRightOfUseAsset" abstract="false" name="LeaseRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_ConsoleServersMember" abstract="true" name="ConsoleServersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_UsGaap_CapitalizedLeaseholdImprovementsPaidByLessor" abstract="false" name="UsGaap_CapitalizedLeaseholdImprovementsPaidByLessor" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_CashpaidforleasesAbstract" abstract="true" name="CashpaidforleasesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dgii_StandardProductWarrantyAccrualTermMaximum" abstract="false" name="StandardProductWarrantyAccrualTermMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dgii_The2021PlanMember" abstract="true" name="The2021PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_ExercisePriceRangeEightMember" abstract="true" name="ExercisePriceRangeEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_TreasurystockPolicyTextBlock" abstract="false" name="TreasurystockPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dgii_LIBORMember" abstract="true" name="LIBORMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_InventoryTransferToPropertyPlantAndEquipment" abstract="false" name="InventoryTransferToPropertyPlantAndEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dgii_ContingentConsiderationMember" abstract="true" name="ContingentConsiderationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_FullEmployerMatchMember" abstract="true" name="FullEmployerMatchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dgii_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dgii_SelectedBalanceSheetDataTableTextBlock" abstract="false" name="SelectedBalanceSheetDataTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
</xs:schema>
