2BH9J-DSDA1Mini PC Media Player

dsdevices.com Model DSDA1 User Manual Thank you for choosing DSDevices DSDA1 Media Player. This manual provides instructions to help you get the most out of your device. Please read it carefully before using it and retain for your reference. We have made every effort to provide the most current information about the device. The information contained here is an instruction intended to enable the correct usage and maintenance of the device. We reserve the right to introduce amendments, changes, or translations of the user manual without prior notification. For this reason, we recommend you regularly visit our website to obtain the latest information dsdevices.com Contents Chapter 1 System Introduction 1.1 - Key Features 1.2 - Environment for Device 1.3 - Package Contents Chapter 2 Remote Controller 2.1 - Introduction of Remote Chapter 3 System Connection 3.1 - AV Connection 3.2 - HDMI Connection dsdevices.com Chapter 1 System Introduction 1.1 - Key Features The device is a commercial grade Android digital signage player Up to 8Kx4K@24fps for AV1 and 4K@120fps for HDR10-bit video up to 8Kx4K@24fps for AV1 and 4K@120fps for HDR10-bit video Support SD/SDHC/MMC cards Supports USB 2.2 and 3.0 host connectors with maximum output current of 1.5A/5V Support standard RJ45 cable network connection and wireless network connection Support infrared remote controller operation 1.2 - Environment for Device Operating Temperature: -10°C to 75°C 1.3 - Package Contents 1 x DSDA1 Media Player 1 x Power Adapter 1 x HDMI Cable 1 x IR Remote Controller dsdevices.com Chapter 2 Remote Controller 2.1 - Introduction of Remote dsdevices.com Chapter 3 System Connection 3.1 - AV Connection 3.2 - HDMI Connection FCC Statement This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. dsdevices.com

Rev1/26/2023 (EV4Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2025-12-1 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BH9J-DSDA1 [ EV4Ltd ]certifiesthattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. [ EV4Ltd ]certifiesthattheequipmentforwhichauthorizationissoughtdoesnotincludecybersecurityor anti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsandassignees, includingequipmentwithintegratedKasperskyLab,Inc.(oranyofitssuccessorsandassignees) cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446D01CoveredEquipment GuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature) (Applicantprintedname)AmandaHamilton Rev1/26/2023 (EV4Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2025-11-21 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BH9J-DSDA1 ( EV4Ltd )certifiesthat,asofthedateofthefilingoftheapplication,theapplicantisnotidentifiedonthe CoveredList(asaspecificallynamedentityoranyofitssubsidiariesoraffiliates)asanentityproducing “covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)AmandaHamilton

EV4Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:November21,2025 Subject;RequestforConfidentiality FCCID: 2BH9J-DSDA1 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:AmandaHamilton Title:

EV4Ltd Date：2025-12-1 ProductModelNumber:DSDA1 FCCID：2BH9J-DSDA1 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title: Email:[email protected] Telephone:442033845015 Onbehalfof:EV4Ltd

Terminal Mounted 2.4/5.8G Dual Band Antennas With IPEX Connector Part No:AC-Q2458-L24W-O 1. Introduction It is a 2.4&5.8G Terminal Antenna designed for fixed and mobile WiFi or Wireless terminal products such as routers,modems and gateways ,captive mount terminal antenna designed for fixed and mobile terminals where the antenna cannot be easily removed multiband multi-position, articulating, WiFi captive mount terminal antenna for modems, routers and devices that are running a radio module with U.FL connectors. We offers a terminal mount antenna solution without the need to use a bulkhead (or panelmount) SMA connector on the enclosure. It has articulating base that locks in 3 positions, vertical, horizontal and at 45 degrees. The antennas mount by way of block out . Through the middle of the stud a coaxial cable feeds the antennas via an IPEX (U.FL compatible) connector. Contact Person:Poliy Liu +86 13925901402 Factory Address:#12 XingYe 5Road,NanFeng DaDao,Sanshui,Foshan,GuangDong,China(528100) E:[email protected] T: +86 757 87668779 2. Specification Electrical Frequency Range 2400-2483/5150-5250/5750-5850MHz Gain 5dBi V.S.W.R ≤2.0 Radiation Omni-Direction Polarization Vertical Maximum Input Power 5W Impedance50Ώ Connector IPEX Cable Type1.13 Cable Length10cm Antenna Radome MaterialTPEE Mechanical DimensionsΦ8x104mm Weight6g Operating Temperature-40°C to+70°C RoHS CompliantYES Contact Person:Poliy Liu +86 13925901402 Factory Address:#12 XingYe 5Road,NanFeng DaDao,Sanshui,Foshan,GuangDong,China(528100) E:[email protected] T: +86 757 87668779 3.Drawing Contact Person:Poliy Liu +86 13925901402 Factory Address:#12 XingYe 5Road,NanFeng DaDao,Sanshui,Foshan,GuangDong,China(528100) E:[email protected] T: +86 757 87668779 4.V.S.W.R Contact Person:Poliy Liu +86 13925901402 Factory Address:#12 XingYe 5Road,NanFeng DaDao,Sanshui,Foshan,GuangDong,China(528100) E:[email protected] T: +86 757 87668779 5.Radiation Pattern 2400MHz 2483MHz Contact Person:Poliy Liu +86 13925901402 Factory Address:#12 XingYe 5Road,NanFeng DaDao,Sanshui,Foshan,GuangDong,China(528100) E:[email protected] T: +86 757 87668779 5200MHz 5850MHz Contact Person:Poliy Liu +86 13925901402 Factory Address:#12 XingYe 5Road,NanFeng DaDao,Sanshui,Foshan,GuangDong,China(528100) E:[email protected] T: +86 757 87668779

ReportNo.:AB25100020FW Page1of3 AppendixEExternalPhotos ReportNo.:AB25100020FW Page2of3 ReportNo.:AB25100020FW Page3of3

LabelandInformation FCCLabelSample Size：3cm*3cm FCCLabelSpecifications TextisBlackincolorandisjustified.Labelsareprintedinindelibleinkonpermanentadhesivebacking orsilk-screenedontotheEUTorshallbeaffixedataconspicuouslocationontheEUT.WheretheEUT isconstructedintwoormoresectionsconnectedbywiresandmarketedtogether,theabovestatement isrequiredtobeaffixedonlytothemaincontrolunit.WhentheEUTissosmallorforsuchusethatitis notpracticabletoplacethestatementonit,theaboveinformationshallbeplacedinaprominentlocation intheinstructionmanualorpamphletsuppliedtotheuseror,alternatively,shallbeplacedonthe containerinwhichthedeviceismarketed. FCCLabelLocation FCCID:2BH9J-DSDA1 Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjectto thefollowingtwoconditions:(1)thisdevicemaynotcauseharmful interference,and(2)thisdevicemustacceptanyinterferencereceived, includinginterferencethatmaycauseundesiredoperation.

ReportNo.:AB25100020FW Page 1 of 4 AppendixFEUTInternalPhotos ReportNo.:AB25100020FW Page 2 of 4 ReportNo.:AB25100020FW Page 3 of 4 ReportNo.:AB25100020FW Page 4 of 4 2.4G/5GWIFI TerminalANT

ReportNo.:AB25100020FW03 AiboStandardTechnology(Shenzhen)Co.,Ltd. 101,BuildingB,TuoriNewEnergyIndustrialPark,High-techPark,TianliaoCommunity,YutangStreet, GuangmingDistrict,ShenzhenCity,GuangdongProvince,China Tel.:+8675585250797E-mail:[email protected]:www.aibonorm.com FCCTESTREPORT ReportNo. ............................................. : AB25100020FW03 FCCID ................................................... : 2BH9J-DSDA1 Applicant ................................................ : EV4Ltd Address ................................................. : KADHOUSEPORTSMOUTHROADESHERKT109ADUK Manufacturer......................................:EV4Ltd Address..............................................:KADHOUSEPORTSMOUTHROADESHERKT109ADUK ProductName......................................:MiniPCMediaPlayer TradeMark............................................: DSDevices TestModel ............................................. : DSDA1 AdditionalModel(s)..............................:/ Standard ................................................ : FCCPart2(Section2.1091) KDB447498D01 IEEEC95.1 DateofReceipt .................................... :2025.10.16 DateofIssue ........................................ :2025.10.29 TestResult............................................:Pass Compiledby: (PrintedName+Signature) HuaijieLi Supervisedby: (PrintedName+Signature) DavidHuang Approvedby: (PrintedName+Signature) JayLiu TestingLaboratoryName...................:AiboStandardTechnology(Shenzhen)Co.,Ltd. Address.................................................:101,BuildingB,TuoriNewEnergyIndustrialPark,High-tech Park,TianliaoCommunity,YutangStreet,GuangmingDistrict, ShenzhenCity,GuangdongProvince,China Thistestreportmaybeduplicatedcompletelyforlegalusewiththeapprovaloftheapplicant.Itshouldnot bereproducedexceptinfull,withoutthewrittenapprovalofourlaboratory.Theclientshouldnotuseitto claimproductendorsementbyAibo.Thetestresultsinthereportonlyapplytothetestedsample.Thetest reportshallbeinvalidwithoutallthesignaturesoftestingengineers,reviewerandapprover.Anyobjections mustberaisedtoAibowithin15dayssincethedatewhenthereportisreceived.Itwillnotbetakeninto considerationbeyondthislimit.Thetestreportmerelycorrespondtothetestsample. ReportNo.:AB25100020FW03 FCCTESTREPORT TestResultPositive Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetestlaboratory. EUT......................................... : MiniPCMediaPlayer TestModel.............................. : DSDA1 Applicant...............................:EV4Ltd Address...................................:KADHOUSEPORTSMOUTHROADESHERKT109ADUK Manufacturer......................... : EV4Ltd Address...................................:KADHOUSEPORTSMOUTHROADESHERKT109ADUK ReportNo.:AB25100020FW03 REPORTVERSION VersionNo.IssueDateDescription 012025.10.29InitialIssue ReportNo.:AB25100020FW03 TABLEOFCONTENTS 1.GENERALINFORMATION...................................................................................................................................5 1.1.GENERALDESCRIPTIONOFEUT..................................................................................................................5 1.2.DESCRIPTIONOFTESTFACILITY.................................................................................................................6 2.RFEXPOSUREEVALUATION............................................................................................................................7 2.1LIMIT..........................................................................................................................................................................7 2.2EVALUATIONRESULT...............................................................................................................................................8 ReportNo.:AB25100020FW03 1.GENERALINFORMATION 1.1.GENERALDESCRIPTIONOFEUT ProductName:MiniPCMediaPlayer TradeMark: DSDevices TestModel: DSDA1 AdditionalModel(s):/ SoftwareVersion:V1.0 PowerSupply:/ EUTSupportsFunction: (Providedbythecustomer) 2.4GWIFI,5GWIFI TestSample(s)Number:AB25100020-01(EngineerSample) RadioSpecificationSubjecttothisReport 2.4GWIFI RadioSpecification:IEEE802.11b/g/n FrequencyRange: 2412MHz~2462MHzforIEEE802.11b/g/n(HT20) 2422MHz~2452MHzforIEEE802.11n(HT40) ModulationType: IEEE802.11b:DSSS(CCK,DQPSK,DBPSK) IEEE802.11g:OFDM(64-QAM,16-QAM,QPSK,BPSK) IEEE802.11n-HT20:OFDM(64-QAM,16-QAM,QPSK,BPSK) IEEE802.11n-HT40:OFDM(64-QAM,16-QAM,QPSK,BPSK) ChannelSpacing:5MHz ChannelNumber(s):11ChannelsforIEEE802.11b/g/n(HT20) 7ChannelsforIEEE802.11n(HT40) AntennaType:IntegralAntenna AntennaGain:5dBi 5GWIFI RadioSpecification:IEEE802.11a/n/ac FrequencyRange: 5150MHz~5250MHzforU-NIIBand1 5745MHz~5825MHzforU-NIIBand3 ModulationType: IEEE802.11a:OFDM(64QAM,16QAM,QPSK,BPSK) IEEE802.11n:OFDM(64-QAM,16-QAM,QPSK,BPSK) IEEE802.11ac:OFDM(256QAM,64QAM,16QAM,QPSK,BPSK) ChannelSpacing: IEEE802.11a/n(HT20)/ac(VHT20):20MHz IEEE802.11n(HT40)/ac(VHT40):40MHz IEEE802.11ac(VHT80):80MHz ChannelNumber(s):U-NIIBand1: 4forIEEE802.11a/n(HT20)/ac(VHT20) 2forIEEE802.11n(HT40))/ac(VHT40) 1forIEEE802.11ac(VHT80) U-NIIBand3: 5forIEEE802.11a/n(HT20)/ac(VHT20) 2forIEEE802.11n(HT40))/ac(VHT40) ReportNo.:AB25100020FW03 1forIEEE802.11ac(VHT80) AntennaType:IntegralAntenna AntennaGain: U-NIIBand1:5dBi U-NIIBand3:5dBi TPCFunction:NotSupport 1.2.DESCRIPTIONOFTESTFACILITY TestLab:AiboStandardTechnology(Shenzhen)Co.,Ltd. Address:101,BuildingB,TuoriNewEnergyIndustrialPark,High-techPark,TianliaoCommunity,Yutang Street,GuangmingDistrict,ShenzhenCity,GuangdongProvince,China Tel.:+8675585250797 E-mail:[email protected] Website:www.aibonorm.com Thetestfacilityisrecognized,certified,oraccreditedbythefollowingorganizations: A2LA-LabCertificateNo.:7514.01 AiboStandardTechnology(Shenzhen)Co.,Ltd.hasbeenaccreditedbyA2LAfortechnicalcompetence inthefieldofelectricaltesting,andprovedtobeincompliancewithISO/IEC17025GeneralRequir…

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ReportNo.:AB25100020FW01 1 / 44 AppendixA2.4GWIFI DutyCycle ConditionModeFrequency(MHz)AntennaDutyCycle(%)CorrectionFactor(dB)1/T(kHz) NVNTb2412Ant199.570.020.12 NVNTb2437Ant199.570.020.12 NVNTb2462Ant199.550.020.12 NVNTg2412Ant197.080.130.72 NVNTg2437Ant197.080.130.72 NVNTg2462Ant197.080.130.72 NVNTn202412Ant196.880.140.77 NVNTn202437Ant196.880.140.77 NVNTn202462Ant196.730.140.77 NVNTn402422Ant193.640.291.54 NVNTn402437Ant193.930.271.54 NVNTn402452Ant193.640.291.54 ReportNo.:AB25100020FW01 2 / 44 TestGraphs DutyCycleNVNTb2412MHzAnt1 DutyCycleNVNTb2437MHzAnt1 ReportNo.:AB25100020FW01 3 / 44 DutyCycleNVNTb2462MHzAnt1 DutyCycleNVNTg2412MHzAnt1 ReportNo.:AB25100020FW01 4 / 44 DutyCycleNVNTg2437MHzAnt1 DutyCycleNVNTg2462MHzAnt1 ReportNo.:AB25100020FW01 5 / 44 DutyCycleNVNTn202412MHzAnt1 DutyCycleNVNTn202437MHzAnt1 ReportNo.:AB25100020FW01 6 / 44 DutyCycleNVNTn202462MHzAnt1 DutyCycleNVNTn402422MHzAnt1 ReportNo.:AB25100020FW01 7 / 44 DutyCycleNVNTn402437MHzAnt1 DutyCycleNVNTn402452MHzAnt1 ReportNo.:AB25100020FW01 8 / 44 MaximumConductedOutputPower ConditionModeFrequency(MHz)AntennaConductedPower(dBm)DutyFactor(dB)TotalPower(dBm)Limit(dBm)Verdict NVNTb2412Ant16.120.026.1430Pass NVNTb2437Ant160.026.0230Pass NVNTb2462Ant15.690.025.7130Pass NVNTg2412Ant16.990.137.1230Pass NVNTg2437Ant16.90.137.0330Pass NVNTg2462Ant16.690.136.8230Pass NVNTn202412Ant16.590.146.7330Pass NVNTn202437Ant16.420.146.5630Pass NVNTn202462Ant16.320.146.4630Pass NVNTn402422Ant16.750.297.0430Pass NVNTn402437Ant16.640.276.9130Pass NVNTn402452Ant16.570.296.8630Pass ReportNo.:AB25100020FW01 9 / 44 TestGraphs PowerNVNTb2412MHzAnt1 PowerNVNTb2437MHzAnt1 ReportNo.:AB25100020FW01 10 / 44 PowerNVNTb2462MHzAnt1 PowerNVNTg2412MHzAnt1 ReportNo.:AB25100020FW01 11 / 44 PowerNVNTg2437MHzAnt1 PowerNVNTg2462MHzAnt1 ReportNo.:AB25100020FW01 12 / 44 PowerNVNTn202412MHzAnt1 PowerNVNTn202437MHzAnt1 ReportNo.:AB25100020FW01 13 / 44 PowerNVNTn202462MHzAnt1 PowerNVNTn402422MHzAnt1 ReportNo.:AB25100020FW01 14 / 44 PowerNVNTn402437MHzAnt1 PowerNVNTn402452MHzAnt1 ReportNo.:AB25100020FW01 15 / 44 -6dBBandwidth ConditionModeFrequency(MHz)Antenna-6dBBandwidth(MHz)Limit-6dBBandwidth(MHz)Verdict NVNTb2412Ant18.0870.5Pass NVNTb2437Ant18.1050.5Pass NVNTb2462Ant18.1160.5Pass NVNTg2412Ant115.510.5Pass NVNTg2437Ant115.950.5Pass NVNTg2462Ant116.050.5Pass NVNTn202412Ant116.310.5Pass NVNTn202437Ant116.780.5Pass NVNTn202462Ant117.40.5Pass NVNTn402422Ant131.660.5Pass NVNTn402437Ant134.110.5Pass NVNTn402452Ant136.220.5Pass ReportNo.:AB25100020FW01 16 / 44 TestGraphs -6dBBandwidthNVNTb2412MHzAnt1 -6dBBandwidthNVNTb2437MHzAnt1 ReportNo.:AB25100020FW01 17 / 44 -6dBBandwidthNVNTb2462MHzAnt1 -6dBBandwidthNVNTg2412MHzAnt1 ReportNo.:AB25100020FW01 18 / 44 -6dBBandwidthNVNTg2437MHzAnt1 -6dBBandwidthNVNTg2462MHzAnt1 ReportNo.:AB25100020FW01 19 / 44 -6dBBandwidthNVNTn202412MHzAnt1 -6dBBandwidthNVNTn202437MHzAnt1 ReportNo.:AB25100020FW01 20 / 44 -6dBBandwidthNVNTn202462MHzAnt1 -6dBBandwidthNVNTn402422MHzAnt1 ReportNo.:AB25100020FW01 21 / 44 -6dBBandwidthNVNTn402437MHzAnt1 -6dBBandwidthNVNTn402452MHzAnt1 ReportNo.:AB25100020FW01 22 / 44 OccupiedChannelBandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNTb2412Ant112.631 NVNTb2437Ant112.675 NVNTb2462Ant112.699 NVNTg2412Ant116.407 NVNTg2437Ant116.398 NVNTg2462Ant116.44 NVNTn202412Ant117.532 NVNTn202437Ant117.553 NVNTn202462Ant117.595 NVNTn402422Ant135.905 NVNTn402437Ant135.932 NVNTn402452Ant135.983

ReportNo.:AB25100020FW01 23 / 44 TestGraphs OBWNVNTb2412MHzAnt1 OBWNVNTb2437MHzAnt1 ReportNo.:AB25100020FW01 24 / 44 OBWNVNTb2462MHzAnt1 OBWNVNTg2412MHzAnt1 ReportNo.:AB25100020FW01 25 / 44 OBWNVNTg2437MHzAnt1 OBWNVNTg2462MHzAnt1 ReportNo.:AB25100020FW01 26 / 44 OBWNVNTn202412MHzAnt1 OBWNVNTn202437MHzAnt1 ReportNo.:AB25100020FW01 27 / 44 OBWNVNTn202462MHzAnt1 OBWNVNTn402422MHzAnt1 ReportNo.:AB25100020FW01 28 / 44 OBWNVNTn402437MHzAnt1 OBWNVNTn402452MHzAnt1 ReportNo.:AB25100020FW01 29 / 44 MaximumPowerSpectralDensityLevel ConditionModeFrequency (MHz) AntennaConductedPSD (dBm/100kHz) DutyFactor (dB) TotalPSD (dBm/100kHz) Limit (dBm/3kHz) Verdict NVNTb2412Ant1-10.070.02-10.058Pass NVNTb2437Ant1-10.620.02-10.68Pass NVNTb2462Ant1-10.630.02-10.618Pass NVNTg2412Ant1-12.170.13-12.048Pass NVNTg2437Ant1-12.490.13-12.368Pass NVNTg2462Ant1-12.330.13-12.28Pass NVNTn202412Ant1-12.650.14-12.518Pass NVNTn202437Ant1-12.690.14-12.558Pass NVNTn202462Ant1-12.950.14-12.818Pass NVNTn402422Ant1-15.290.29-158Pass NVNTn402437Ant1-15.530.27-15.268Pass NVNTn402452Ant1-15.480.29-15.198Pass ReportNo.:AB25100020FW01 30 / 44 TestGraphs PSDNVNTb2412MHzAnt1 PSDNVNTb2437MHzAnt1 ReportNo.:AB25100020FW01 31 / 44 PSDNVNTb2462MHzAnt1 PSDNVNTg2412MHzAnt1 ReportNo.:AB25100020FW01 32 / 44 PSDNVNTg2437MHzAnt1 PSDNVNTg2462MHzAnt1 ReportNo.:AB25100020FW01 33 / 44 PSDNVNTn202412MHzAnt1 PSDNVNTn202437MHzAnt1 ReportNo.:AB25100020FW01 34 / 44 PSDNVNTn202462MHzAnt1 PSDNVNTn402422MHzAnt1 ReportNo.:AB25100020FW01 35 / 44 PSDNVNTn402437MHzAnt1 PSDNVNTn402452MHzAnt1 ReportNo.:AB25100020FW01 36 / 44 BandEdge ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTb2412Ant1-50.35-30Pass NVNTb2462Ant1-51.99-30Pass NVNTg2412Ant1-46.09-30Pass NVNTg2462Ant1-49.31-30Pass NVNTn202412Ant1-44.5-30Pass NVNTn202462Ant1-50.63-30Pass NVNTn402422Ant1-40.63-30Pass NVNTn402452Ant1-47.65-30Pass ReportNo.:AB25100020FW01 37 / 44 TestGraphs BandEdgeNVNTb2412MHzAnt1Ref BandEdgeNVNTb2412MHzAnt1Emission ReportNo.:AB25100020FW01 38 / 44 BandEdgeNVNTb2462MHzAnt1Ref BandEdgeNVNTb2462MHzAnt1Emission ReportNo.:AB25100020FW01 39 / 44 BandEdgeNVNTg2412MHzAnt1Ref BandEdgeNVNTg2412MHzAnt1Emission ReportNo.:AB25100020FW01 40 / 44 BandEdgeNVNTg2462MHzAnt1Ref BandEdgeNVNTg2462MHzAnt1Emission ReportNo.:AB25100020FW01 41 / 44 BandEdgeNVNTn202412MHzAnt1Ref BandEdgeNVNTn202412MHzAnt1Emission ReportNo.:AB25100020FW01 42 / 44 BandEdgeNVNTn202462MHzAnt1Ref BandEdgeNVNTn202462MHzAnt1Emission

ReportNo.:AB25100020FW01 43 / 44 BandEdgeNVNTn402422MHzAnt1Ref BandEdgeNVNTn402422MHzAnt1Emission ReportNo.:AB25100020FW01 44 / 44 BandEdgeNVNTn402452MHzAnt1Ref BandEdgeNVNTn402452MHzAnt1Emission

ReportNo.:AB25100020FW01 AiboStandardTechnology(Shenzhen)Co.,Ltd. 101,BuildingB,TuoriNewEnergyIndustrialPark,High-techPark,TianliaoCommunity,YutangStreet, GuangmingDistrict,ShenzhenCity,GuangdongProvince,China Tel.:+8675585250797E-mail:[email protected]:www.aibonorm.com FCCTESTREPORT ReportNo..............................................:AB25100020FW01 FCCID...................................................:2BH9J-DSDA1 Applicant................................................:EV4Ltd Address ................................................. :KADHOUSEPORTSMOUTHROADESHERKT109ADUK Manufacturer......................................:EV4Ltd Address..............................................:KADHOUSEPORTSMOUTHROADESHERKT109ADUK ProductName.......................................:MiniPCMediaPlayer TradeMark............................................:DSDevices TestModel.............................................:DSDA1 AdditionalModel(s) .............................. :/ Standard ................................................ :FCC47CFRPart15SubpartC(Part15.247) DateofReceipt .................................... :2025.10.16 DateofTestDate.................................:2025.10.16-2025.12.01 DateofIssue ........................................ :2025.12.01 TestResult ............................................ :Pass Compiledby: (PrintedName+Signature) HuaijieLi Supervisedby: (PrintedName+Signature) DavidHuang Approvedby: (PrintedName+Signature) JayLiu TestingLaboratoryName ................... :AiboStandardTechnology(Shenzhen)Co.,Ltd. Address ................................................. :101,BuildingB,TuoriNewEnergyIndustrialPark,High-techPark, TianliaoCommunity,YutangStreet,GuangmingDistrict,Shenzhen City,GuangdongProvince,China Thistestreportmaybeduplicatedcompletelyforlegalusewiththeapprovaloftheapplicant.Itshouldnotbe reproducedexceptinfull,withoutthewrittenapprovalofourlaboratory.Theclientshouldnotuseittoclaim productendorsementbyAibo.Thetestresultsinthereportonlyapplytothetestedsample.Thetestreport shallbeinvalidwithoutallthesignaturesoftestingengineers,reviewerandapprover.Anyobjectionsmustbe raisedtoAibowithin15dayssincethedatewhenthereportisreceived.Itwillnotbetakenintoconsideration beyondthislimit.Thetestreportmerelycorrespondtothetestsample. ReportNo.:AB25100020FW01 Page2of31 AiboStandardTechnology(Shenzhen)Co.,Ltd. FCCTESTREPORT TestResultPositive Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetestlaboratory. EUT......................................... : MiniPCMediaPlayer TestModel.............................. : DSDA1 Applicant...............................:EV4Ltd Address...................................:KADHOUSEPORTSMOUTHROADESHERKT109ADUK Manufacturer......................... : EV4Ltd Address...................................:KADHOUSEPORTSMOUTHROADESHERKT109ADUK ReportNo.:AB25100020FW01 Page3of31 AiboStandardTechnology(Shenzhen)Co.,Ltd. REPORTVERSION VersionNo.IssueDateDescription 012025.12.01InitialIssue ReportNo.:AB25100020FW01 Page4of31 AiboStandardTechnology(Shenzhen)Co.,Ltd. TABLEOFCONTENTS 1.GENERALINFORMATION ...........................................................................................................................................5 1.1.GENERALDESCRIPTIONOFEUT........................................................................................................................................5 1.2.DESCRIPTIONOFSUPPORTEQUIPMENT..........................................................................................................................6 1.3.DESCRIPTIONOFEXTERNALI/O.......................................................................................................................................6 1.4.GENERALDESCRIPTIONOFAPPLIEDSTANDARDS............................................................................................................7 1.5.DESCRIPTIONOFTESTFACILITY........................................................................................................................................7 1.6.MEASUREMENTUNCERTAINTY........................................................................................................................................8 1.7.ENVIRONMENTALCONDITIONS.......................................................................................................................................8 1.8.DESCRIPTIONOFTESTMODES.........................................................................................................................................9 2.SUMMARYOFTESTRESULT ...................................................................................................................................11 3.MEASUREMENTINSTRUMENTSLIST...................................................................................................................12 4.ANTENNAREQUIREMENT........................................................................................................................................13 5.CONDUCTEDOUTPUTPOWER ...............................................................................................................................14 5.1.LIMIT...............................................................................................................................................................................14 5.2.TESTSETUP.....................................................................................................................................................................14 5.3.TESTPROCEDURE............................................................................................................................................................14 5.4.TESTRESULT....................................................................................................................................................................15 6.6DBBANDWIDTHANDOCCUPIEDBANDWIDTH...........…

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ReportNo.:AB25100020FW Page1of4 AppendixDTestPhotos RadiatedSpuriousEmissionTestView1 ReportNo.:AB25100020FW Page2of4 RadiatedSpuriousEmissionTestView2 ReportNo.:AB25100020FW Page3of4 ACPowerLineConductedEmissionsTestView ReportNo.:AB25100020FW Page4of4 RFTestView