2BXRS-Z50Z50 tablet PC

Rev1/26/2023 ShenzhenXintangMicroelectronicsCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-8-21 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BXRS-Z50 (“ShenzhenXintangMicroelectronicsCo.,Ltd.”)certifiesthattheequipmentforwhichauthorizationis soughtisnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. (“ShenzhenXintangMicroelectronicsCo.,Ltd.”)certifiesthattheequipmentforwhichauthorizationis soughtdoesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc. oranyofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyof itssuccessorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB 986446D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature)PingZhang (Applicantprintedname) Rev1/26/2023 ShenzhenXintangMicroelectronicsCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-8-21 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BXRS-Z50 (“ShenzhenXintangMicroelectronicsCo.,Ltd.”)certifiesthat,asofthedateofthefilingofthe application,ShenzhenXintangMicroelectronicsCo.,Ltd.isnotidentifiedontheCoveredList(asa specificallynamedentityoranyofitssubsidiariesoraffiliates)asanentityproducing“covered” equipment. Sincerely, (Applicantsignature) (Applicantprintedname)PingZhang

ShenzhenXintangMicroelectronicsCo.,Ltd. 2.911(d)(7)USAAgentv1.4 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:ShenzhenXintangMicroelectronicsCo.,Ltd. Address:C1608NiulanqianBuilding,XinniuCommunity,MinzhiStreet,Longhua District,Shenzhen,China ProductName:Z50tabletPC FCCID:2BXRS-Z50 Model(s):Z50,Z17,Z27,X90,M9-4,M19,S3,S7,PAD5,PAD6,12S,X15 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ShenzhenXintangMicroelectronicsCo.,Ltd.](“theapplicant”)designate [CELLTINC.] NOTE1 forthepurposeofacceptingserviceofprocessonbehalfofthe applicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:CELLTINC. Address:140121STST#12958 SACRAMENTO,CA95811,USA FRN:0036412567 Applicant Companyname:ShenzhenXintang MicroelectronicsCo.,Ltd. Address:C1608NiulanqianBuilding, XinniuCommunity,MinzhiStreet, LonghuaDistrict,Shenzhen,China ShenzhenXintangMicroelectronicsCo.,Ltd. 2.911(d)(7)USAAgentv1.4 ContactName:ThompsonLim TelephoneNo:001-424-3474188 Email:[email protected] FRN:0038794970. FCCGranteeCode:2BXRS ContactName:PingZhang TelephoneNo:18907447455 Email:[email protected] Signature: Title:Manager Signature: Title:Manager Date:2026-8-21Date:2026-8-21 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

ShenzhenXintangMicroelectronicsCo.,Ltd. Date:2026-8-21 Product/ModelNumber:Z50tabletPC/Z50,Z17,Z27,X90,M9-4,M19,S3,S7, PAD5,PAD6,12S,X15 FCCID:2BXRS-Z50 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By:PingZhang. ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:18907447455 Onbehalfof:ShenzhenXintangMicroelectronicsCo.,Ltd.

ShenzhenXintangMicroelectronicsCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August21,2026 Subject;RequestforConfidentiality FCCID:2BXRS-Z50 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:PingZhang Title:Manager

ShenzhenXintangMicroelectronicsCo.,Ltd. ProductSimilarityDeclaration Productname:Z50tabletPC Modelname:Z50,Z17,Z27,X90,M9-4,M19,S3,S7,PAD5, PAD6,12S,X15 FCCID:2BXRS-Z50 We(ShenzhenXintangMicroelectronicsCo.,Ltd.)herebystate thatallthemodelsareelectricalidenticalincludingthesame softwareparameterandhardwaredesign(i.e.,circuitdesign,PCB Layout,RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureand design(includingproductenclosure,materials,etc.,),theonly differencearethemodelname,shellcolor,backcover appearanceandcameradecoration. Signature: Name:PingZhang Title:Manager Place,date:Shenzhen,2026.08.21

Label: Z50tabletPC Model:Z50 FCCID:2BXRS-Z50 Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothe followingtwoconditions:(1)Thisdevicemaynotcauseharmfulinterference,and(2) thisdevicemustacceptanyinterferencereceived,includinginterferencethatmay causeundesiredoperation. 70mm 40mm

FCC ID: 2BXRS-Z50 RFExposureEvaluation According toKDB 447498 D01 General RF Exposure Guidance v06and part 2.1093， Unless specifically required by thepublished RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required whenthe correspondingSAR Test Exclusion Thresholdcondition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separationdistances ≤ 5 mm, the 1-g and 10-g SAR test exclusion thresholds aredetermined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] ꞏ [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to thenearest mW and mm before calculation The result is rounded to one decimal place for comparison Here, BT Mode Frequency (MHz) Max Power (dBm) Target power W/ tolerance (dBm) Max tune up power tolerance (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds limit GFSK 2402-0.48 0±1.0 1.01.25895.000.39023.0 2441-0.320±1.01.01.25895.000.39343.0 2480-0.57 0±1.0 1.01.25895.000.39653.0 Π/4-DQPSK 24020.36 1±1.0 2.01.58495.000.49133.0 24410.431±1.02.01.58495.000.49523.0 24800.24 1±1.0 2.01.58495.000.49923.0 8DPSK 24020.78 1±1.0 2.01.58495.000.49133.0 244111±1.02.01.58495.000.49523.0 24800.8 1±1.0 2.01.58495.000.49923.0 Remark: 1. Only records the data of the worst mode. 2. BT and wifi can transmit at the same time. 3. In the case of simultaneous launches for wifi and BT: The Max Calc. Thresholds : BT:0.4992, WiFi: 2.4673, So a SAR test is not required WIFI 2.4G Mode Frequency (MHz) Max Power (dBm) Target power W/ tolerance (dBm) Max tune up power tolerance (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds limit 802.11b 24128.24 8±1.0 9.07.94335.002.46733.0 24376.167±1.08.06.30965.001.97003.0 24627.7 7±1.0 8.06.30965.001.98003.0 802.11g 24127.76 7±1.0 8.06.30965.001.95983.0 24375.776±1.07.05.01195.001.56483.0 24627.52 7±1.0 8.06.30965.001.98003.0 802.11n20 24127.9 7±1.0 8.06.30965.001.95983.0 24375.916±1.07.05.01195.001.56483.0 24627.64 7±1.0 8.06.30965.001.98003.0 802.11n40 24226.26 6±1.0 7.05.01195.001.56003.0 24376.066±1.07.05.01195.001.56483.0 24527.14 7±1.0 8.06.30965.001.97603.0

Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page1of68 RF Test Data Duty Cycle........................................................................................................................................................................ 2 Maximum Peak Conducted Output Power.......................................................................................................................8 -20dB Bandwidth............................................................................................................................................................14 Occupied Channel Bandwidth........................................................................................................................................20 Carrier Frequencies Separation.....................................................................................................................................26 Number of Hopping Channel..........................................................................................................................................32 Band Edge......................................................................................................................................................................35 Band Edge(Hopping)......................................................................................................................................................42 Conducted RF Spurious Emission................................................................................................................................. 49 Dwell Time......................................................................................................................................................................59 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page2of68 Duty Cycle ConditionModeFrequency (MHz)AntennaDuty Cycle (%)Correction Factor (dB)1/T (kHz) NVNT 1-DH12402Ant176.911.140.35 NVNT 1-DH12441Ant176.911.140.35 NVNT 1-DH12480Ant176.911.140.35 NVNT 2-DH12402Ant177.121.130.35 NVNT 2-DH12441Ant177.071.130.35 NVNT 2-DH12480Ant177.071.130.35 NVNT 3-DH12402Ant177.121.130.35 NVNT 3-DH12441Ant177.121.130.35 NVNT 3-DH12480Ant177.121.130.35 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page3of68 Duty Cycle NVNT 1-DH1 2402MHz Ant1 Duty Cycle NVNT 1-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page4of68 Duty Cycle NVNT 1-DH1 2480MHz Ant1 Duty Cycle NVNT 2-DH1 2402MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page5of68 Duty Cycle NVNT 2-DH1 2441MHz Ant1 Duty Cycle NVNT 2-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page6of68 Duty Cycle NVNT 3-DH1 2402MHz Ant1 Duty Cycle NVNT 3-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page7of68 Duty Cycle NVNT 3-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page8of68 Maximum Peak Conducted Output Power ConditionModeFrequency (MHz) AntennaConducted Power (dBm) Conducted Power (W) Limit Conducted(dBm) Verdict NVNT 1-DH12402Ant1-0.480.000921Pass NVNT 1-DH12441Ant1-0.320.0009321Pass NVNT 1-DH12480Ant1-0.570.0008821Pass NVNT 2-DH12402Ant10.360.0010921Pass NVNT 2-DH12441Ant10.430.001121Pass NVNT 2-DH12480Ant10.240.0010621Pass NVNT 3-DH12402Ant10.780.001221Pass NVNT 3-DH12441Ant110.0012621Pass NVNT 3-DH12480Ant10.80.001221Pass Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page9of68 Peak Power NVNT 1-DH1 2402MHz Ant1 Peak Power NVNT 1-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page10of68 Peak Power NVNT 1-DH1 2480MHz Ant1 Peak Power NVNT 2-DH1 2402MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page11of68 Peak Power NVNT 2-DH1 2441MHz Ant1 Peak Power NVNT 2-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page12of68 Peak Power NVNT 3-DH1 2402MHz Ant1 Peak Power NVNT 3-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page13of68 Peak Power NVNT 3-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page14of68 -20dB Bandwidth ConditionModeFrequency (MHz) Antenna-20 dB Bandwidth (MHz) Verdict NVNT1-DH12402Ant11.023Pass NVNT1-DH12441Ant11.035Pass NVNT1-DH12480Ant11.04Pass NVNT2-DH12402Ant11.331Pass NVNT2-DH12441Ant11.335Pass NVNT2-DH12480Ant11.369Pass NVNT3-DH12402Ant11.315Pass NVNT3-DH12441Ant11.294Pass NVNT3-DH12480Ant11.3Pass Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page15of68 -20dB Bandwidth NVNT 1-DH1 2402MHz Ant1 -20dB Bandwidth NVNT 1-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page16of68 -20dB Bandwidth NVNT 1-DH1 2480MHz Ant1 -20dB Bandwidth NVNT 2-DH1 2402MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page17of68 -20dB Bandwidth NVNT 2-DH1 2441MHz Ant1 -20dB Bandwidth NVNT 2-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page18of68 -20dB Bandwidth NVNT 3-DH1 2402MHz Ant1 -20dB Bandwidth NVNT 3-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page19of68 -20dB Bandwidth NVNT 3-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page20of68 Occupied Channel Bandwidth ConditionModeFrequency (MHz)Antenna99% OBW (MHz) NVNT1-DH12402Ant10.94076 NVNT1-DH12441Ant10.95185 NVNT1-DH12480Ant10.96254 NVNT2-DH12402Ant11.2129 NVNT2-DH12441Ant11.2382 NVNT2-DH12480Ant11.2624 NVNT3-DH12402Ant11.2266 NVNT3-DH12441Ant11.226 NVNT3-DH12480Ant11.2288 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page21of68 OBW NVNT 1-DH1 2402MHz Ant1 OBW NVNT 1-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page22of68 OBW NVNT 1-DH1 2480MHz Ant1 OBW NVNT 2-DH1 2402MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page23of68 OBW NVNT 2-DH1 2441MHz Ant1 OBW NVNT 2-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page24of68 OBW NVNT 3-DH1 2402MHz Ant1 OBW NVNT 3-DH1 2441MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page25of68 OBW NVNT 3-DH1 2480MHz Ant1 Report No.:SZNTT26026158E1-1 SZNTT-TR728-0Page26of68 Carrier Frequencies Separation ConditionModeAntennaHopping Freq1 (MHz) Hopping Freq2 (MHz) HFS (MHz) Limit (MHz) Verdict NVNT 1-DH1 Ant12402.0242403.0080.9840.658Pass NVNT 1-DH1 Ant12440.9922441.9941.0020.684Pass NVNT …

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Address: Room 211, Hengbo science and technology Industrial Park, Qingning road, Longhua District, Shenzhen Product specification Quick Reference Date WBP760-1B-A 2.1（Antenna） 1 Method of polarization Vertical 2 Fre 2400-2500MHZ/5050-5850MHZMHZ 3 VSWR ≤2.0/≤2.0 4 Bandwidth 100MHZ/800MHZ 5 Impedance 50 ohm 6 Peak gain 1.9dbi(wifi 2.4g)/2.4dbi(wifi5g) 7 Power capacity 50W 8 Radiation direction omnibearing 9 Antenna type PIFA Antenna Gain BAND WIFI/BT Freq.[MHZ] 2400 2450 2500 5050 5450 5850 Gain [dBi] 1.7 1.7 1.9 2.0 2.4 1.7 VSWR Shenzhen Signalsen Telecom Technology Co.,Ltd 深圳信诺山通信技术有限公司 www.signalsen.com 第2页- The Environment of Antenna Radiation Pattern 深圳信诺山通信技术有限公司 www.signalsen.com 第3页- 3D radiation pattern diagram 深圳信诺山通信技术有限公司 www.signalsen.com 第4页- 深圳信诺山通信技术有限公司 www.signalsen.com 第5页- 深圳信诺山通信技术有限公司 www.signalsen.com 第6页- Unit:mm

Shenzhen NTT Testing Technology Co.,Ltd.Report No.: SZNTT26026158E1-1 SZNTT-TR838-0Tel:0755-27889935Web:http://www.ntt-testing.comPage 1 of 31 TEST REPORT Applicant: Shenzhen Xintang Microelectronics Co., Ltd. Address: C1608 Niulanqian Building, Xinniu Community, Minzhi Street, Longhua District,Shenzhen, China Manufacturer : Shenzhen Xintang Microelectronics Co., Ltd. Address: C1608 Niulanqian Building, Xinniu Community, Minzhi Street, Longhua District,Shenzhen, China Product Name : Z50 tablet PC Model Number : Z50, Z17, Z27, X90, M9-4, M19, S3, S7, PAD5, PAD6, 12S, X15 Trademark: N/A FCC ID: 2BXRS-Z50 Test Date: Jun. 24, 2026 to Aug. 17, 2026 Date of Report : Aug. 17, 2026 Test Result: This device described above has been tested by NTT, and the test results show that the equipment under test (EUT) is in compliance with the Standard requirements. And it is applicable only to the tested sample identified in the report. Test Procedure Used: Standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024 Prepared by(Test Engineer): Cindy Qin Reviewer(Supervisor): Ken Wu Approved(Manager): Abel Yu Shenzhen NTT Testing Technology Co.,Ltd.Report No.: SZNTT26026158E1-1 SZNTT-TR838-0Tel:0755-27889935Web:http://www.ntt-testing.comPage 2 of 31 TABLE OF CONTENT 1. General Information....................................................................................5 1.1. Description of Device (EUT).......................................................................................................................5 1.2. Channel List..................................................................................................................................................5 1.3. Summary of test result................................................................................................................................6 1.4. Special Accessories and Auxiliary Equipment........................................................................................6 1.5. Test mode......................................................................................................................................................6 1.6. Test configuration.........................................................................................................................................6 1.7. Block Diagram...............................................................................................................................................7 1.8. Test Conditions.............................................................................................................................................7 1.9. Measurement Uncertainty (95% confidence levels, k=2)......................................................................8 1.10. Test Facility..................................................................................................................................................8 1.11. Test Equipment...........................................................................................................................................9 2. Conducted emission at the mains terminals test...................................11 2.1. Limit..............................................................................................................................................................11 2.2. Test Setup....................................................................................................................................................11 2.3. Test Procedure............................................................................................................................................11 2.4. Test Result..................................................................................................................................................12 3. Radiated Spurious Emissions..................................................................14 3.1. Limit..............................................................................................................................................................14 3.2. Test Setup....................................................................................................................................................15 3.3. Test Procedure............................................................................................................................................17 3.4. Test Result...................................................................................................................................................18 4. Maximum Peak Output Power..................................................................24 4.1. Limit..............................................................................................................................................................24 4.2. Test Setup....................................................................................................................................................24 4.3. Test Procedure............................................................................................................................................24 4.4. Test Result...................................................................................................................................................24 5. -20 dB Bandwidth Measurement..............................................................25 5.1. Limit..............................................................................................................................................................25 5.2. Test Setup....................................................................................................................................................25 5.3. Test Procedure......................................................................................................…

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