2BERM-K87MECHANICAL KEYBOARD

ShenzhenZhishiintelligentTechnologyCo.,LTD A3401RongdeTimesSquare,HuaqiaoXincunCommunity,HenggangStreet,LonggangDistrict,Shenzhen,China FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Jul.01,2024 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BERM-K87 [ShenzhenZhishiintelligentTechnologyCo.,LTD](“theapplicant”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Sincerely, (Applicantsignature) (JianboMo)

ShenzhenZhishiintelligentTechnologyCo.,LTD A3401RongdeTimesSquare,HuaqiaoXincunCommunity,HenggangStreet,LonggangDistrict,Shenzhen,China FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Jul.01,2024 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BERM-K87 [ShenzhenZhishiintelligentTechnologyCo.,LTD](“theapplicant”)certifiesthat,asofthedateofthe filingoftheapplication,theapplicantisnotidentifiedontheCoveredListasanentityproducing “covered”equipment. Sincerely, (Applicantsignature) (JianboMo)

ShenzhenZhishiintelligentTechnologyCo.,LTD A3401RongdeTimesSquare,HuaqiaoXincunCommunity,HenggangStreet,LonggangDistrict,Shenzhen,China Date:Jul.01,2024 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 FCCID:2BERM-K87 USAgent–AttestationStatement/Part2.911(d)(7) [ShenzhenZhishiintelligentTechnologyCo.,LTD]certifies,thatasof[Jul.01,2024],wehavedesignatedFCCUS Agent,LLCtoacceptserviceofprocessonourbehalfforFCCID:2BERM-K87. [ShenzhenZhishiintelligentTechnologyCo.,LTD],acceptstomaintainanagentofserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminatedallmarketingandimportationofthe applicableequipmentwithintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicialproceeding involvingtheequipment,whicheverislater. FCCUSAgent,LLC,acceptsasofthedateofthefilingofthisapplication,theobligationofbeingthedesignatedagent forthepurposeofacceptingserviceofprocessonbehalfof[ShenzhenZhishiintelligentTechnologyCo.,LTD]for FCCID:2BERM-K87. DesignatedAgentInformation: CompanyName:FCCUSAgent,LLC FRN:0033402884 Address:3722IllinoisAvenue,SaintCharles,IL,60174,USA ContactPerson:TimPayne Phone:708-571-3148 Email:[email protected] Sincerely, Company:[ShenzhenZhishiintelligent TechnologyCo.,LTD] DesignatedAgent:FCCUSAgent,LLC CompanyRepresentative:[JianboMo] Tel:0755-57569699 Email:[email protected] FRN:0034802678 DesignatedAgentRepresentative:TimPayne Signature:Signature:

ShenzhenZhishiintelligentTechnologyCo.,LTD A3401RongdeTimesSquare,HuaqiaoXincunCommunity,HenggangStreet,LonggangDistrict,Shenzhen,China OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:Jul.01,2024 Subject;RequestforConfidentiality FCCID:2BERM-K87 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram OperationalDescription 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 Contactperson:JianboMo

Shenzhen Zhishi intelligent Technology Co., LTD A3401 Rongde Times Square, Huaqiao Xincun Community, Henggang Street, Longgang District, Shenzhen, China (Jul. 01, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Attestation of Global Compliance (Shenzhen) Co., Ltd) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name: Jianbo Mo Title: General Manager

Report No.: AGC12810240602AP03 Page 1 of 4 EXTERNAL PHOTOS ALL VIEW OF EUT TOP VIEW OF EUT Report No.: AGC12810240602AP03 Page 2 of 4 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC12810240602AP03 Page 3 of 4 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC12810240602AP03 Page 4 of 4 RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location 40mm&30mm FCC ID: 2BERM-K87

Report No.: AGC12810240602AP03 Page 1 of 4 INTERNAL PHOTOS PORT VIEW OF EUT (FIGURE 1) OPEN VIEW OF EUT (FIGURE 1) Report No.: AGC12810240602AP03 Page 2 of 4 INTERNAL VIEW OF EUT (FIGURE 1) INTERNAL VIEW OF EUT (FIGURE 2) Report No.: AGC12810240602AP03 Page 3 of 4 INTERNAL VIEW OF EUT (FIGURE 3) INTERNAL VIEW OF EUT (FIGURE 4) Report No.: AGC12810240602AP03 Page 4 of 4 INTERNAL VIEW OF EUT (FIGURE 5) BATTERY VIEW OF EUT (FIGURE 1) ****************************************End of Report************************************* 2.4G / BT Antenna

Page 1 of 10 RF Exposure Report Report No.: AGC12810240602FH01 FCC ID : 2BERM-K87 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : MECHANICAL KEYBOARD BRAND NAME : MCHOSE MODEL NAME : K87 APPLICANT : Shenzhen Zhishi intelligent Technology Co., LTD DATE OF ISSUE : Jul. 01, 2024 STANDARD(S) : FCC KDB 447498 D01 V06 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC12810240602FH01 Page 2 of 10 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jul. 01, 2024 Valid Initial Release Report No.: AGC12810240602FH01 Page 3 of 10 Table of Contents 1. General Information ........................................................................................................................................ 4 2. Product Information ........................................................................................................................................ 5 2.1 Product Technical Description ................................................................................................................... 5 3. Test Environment ............................................................................................................................................ 6 3.1 Address Of The Test Laboratory ............................................................................................................... 6 3.2 Test Facility ................................................................................................................................................ 6 3.3 Environmental Conditions ......................................................................................................................... 7 4. Portable Device Evaluation Method and Limit ............................................................................................. 8 5. Mobile Device Evaluation Method and Limit ................................................................................................ 9 6. Measurement Results ................................................................................................................................... 10 7. Measurement Evaluation .............................................................................................................................. 10 Report No.: AGC12810240602FH01 Page 4 of 10 1. General Information Applicant Shenzhen Zhishi intelligent Technology Co., LTD Address A3401 Rongde Times Square, Huaqiao Xincun Community, Henggang Street, Longgang District, Shenzhen, China Manufacturer Zhishi intelligent Technology (Dongguan) Co., LTD Address Room 102, Building 1, No.21, Xiewu Industrial Road, Hengshan, Shipai Town, Dongguan City, Guangdong Province, China Factory Zhishi intelligent Technology (Dongguan) Co., LTD Address Room 102, Building 1, No.21, Xiewu Industrial Road, Hengshan, Shipai Town, Dongguan City, Guangdong Province, China Product Designation MECHANICAL KEYBOARD Brand Name MCHOSE Test Model K87 Series Model(s) N/A Difference Description N/A Date of receipt of test item Jun. 19, 2024 Date of Test Jun. 19, 2024 to Jul. 01, 2024 Deviation from Standard No any deviation from the test method Condition of Test Sample Normal Test Result Pass Test Report Form No AGCER-FCC-RF Exposure-V1 Note: The test results of this report relate only to the tested sample identified in this report. Prepared By Thea Huang (Project Engineer) Jul. 01, 2024 Reviewed By Calvin Liu (Reviewer) Jul. 01, 2024 Approved By Max Zhang Authorized Officer Jul. 01, 2024 Report No.: AGC12810240602FH01 Page 5 of 10 2. Product Information 2.1 Product Technical Description Frequency Band (Operating) Bluetooth: 2.402GHz ~ 2.480GHz Other: 2.4G: 2.405GHz~2.475GHz Hardware Version V0.3 Software Version V1.0 Modulation Type BLE GFSK 1Mbps GFSK 2Mbps 2.4G GFSK Maximum Transmitter Power BLE(1Mbps): 1.843dBm 2.4G: -1.169dBm Device Category Portable (<20cm separation) Mobile (>20cm separation) Others: Antenna Diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Antenna Designation PCB Antenna Antenna Gain BLE: 2.34dBi 2.4G: 2.34dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Report No.: AGC12810240602FH01 Page 6 of 10 3. Test Environment 3.1 Address Of The Test Laboratory Laboratory: Attestation of Global Compliance (Shenzhen) Co., Ltd. Address: 1-2/F, Building 19, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China 3.2 Test Facility The test facility is recognized, certified, or accredited by the following organizations: CNAS-Lab Code: L5488 Attestation of Global Compliance (Shenzhen) Co., Ltd. has been assessed and proved to follow CNAS-CL01 Accreditation Criteria for Testing and Calibration Laboratories (identical to ISO/IEC17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories.) A2LA-Lab Cert. No.: 5054.02 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been accredited by A2LA for technical competence in the field of electrical testing, and proved to follow ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories and any additional program requirements in the identified field of testing. FCC-Registration No.: 975832 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the FCC (Federal Communications Commission). The acceptance letter from the FCC is maintained in our files with Registration 975832. IC-Registration No.: 24842(CAB identifier: CN0063) Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the Certification and Engineering Bureau of Industry Canada. The acceptance letter from the IC is maintained in our files with Registration 24842. Report No.: AGC12810240602FH01 …

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Antenna Specification Specifications Summary ITEMSPEC. Model NameIBM 2.4 GHz Center Frequency 2402 MHz 2441 MHz 2480 MHz 2.34 dBi 2.07dBi 1.45 dBi MAX. GAIN2.34 dBi PolarizationHorizontal Azimuth Beam Pattern Omni-directional Impedance50Ω Antenna Length Antenna Photo & Length (mm) Test Address 16 Tzu Chiang Road, Hsinchu Industrial District Hsinchu Hsien 303, Taiwan Test Date2009-04-14 Test Instrument vector network analyzer - R&S ZVB20 36.0mm 1. Main antenna : 2402 MHz 1.1 Horizontal Frequency(MHZ):2402Antenna Polarity:Horizontal Maximum Gain(dBi): 2.34 Average Gain(dBi):-2.48 Minim um Gain(dBi):-55.18 1.2 Vertical Frequency(MHZ):2402Antenna Polarity:Vertical Maximum Gain(dBi): -4.51 AverageGain(dBi) :-8.98 Minimum Gain(dBi):-62.3 2. Main antenna : 2441 MHz 2.1 Horizontal Frequency(MHZ):2441Antenna Polarity:Horizontal Maximum Gain(dBi): 2.07 Average Gain(dBi) : -2.54 Minimum Gain(dBi): -66.98 2.2 Vertical Frequency(MHZ):2441Antenna Polarity:Vertical Maximum Gain(dBi): -4.29 AverageGain(dBi) :-8.81 Minimum Gain(dBi):-51.4 2. Main antenna : 2480 MHz 2.1 Horizontal Frequency(MHZ): 2480AntennaPolarity:Horizontal Maximum Gain(dBi):1.45 AverageG ain(dBi) : -3.34 Minimum Gain(dBi): -53.4 2.2 Vertical Frequency(MHZ):2480Antenna Polarity:Vertical Maximum Gain(dBi): -4.95 AverageGain(dBi) :-9.06 Minimum Gain(dBi):-60.00

Page 1 of 53 FCC Test Report Report No.: AGC12810240602FR02 FCC ID : 2BERM-K87 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : MECHANICAL KEYBOARD BRAND NAME : MCHOSE MODEL NAME : K87 APPLICANT : Shenzhen Zhishi intelligent Technology Co., LTD DATE OF ISSUE : Jul. 01, 2024 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation Of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC12810240602FR02 Page 2 of 53 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jul. 01, 2024 Valid Initial Release Report No.: AGC12810240602FR02 Page 3 of 53 Table of Contents 1. General Information ........................................................................................................................................ 5 2. Product Information ........................................................................................................................................ 6 2.1 Product Technical Description ..................................................................................................................... 6 2.2 Test Frequency List ..................................................................................................................................... 7 2.3 Related Submittal(S) / Grant (S) ................................................................................................................. 8 2.4 Test Methodology......................................................................................................................................... 8 2.5 Special Accessories ..................................................................................................................................... 8 2.6 Equipment Modifications ............................................................................................................................. 8 2.7 Antenna Requirement .................................................................................................................................. 8 3. Test Environment ............................................................................................................................................ 9 3.1 Address of the Test Laboratory .................................................................................................................... 9 3.2 Test Facility .................................................................................................................................................. 9 3.3 Environmental Conditions ......................................................................................................................... 10 3.4 Measurement Uncertainty ......................................................................................................................... 10 3.5 List of Equipment Use ............................................................................................................................... 11 4.System Test Configuration ............................................................................................................................ 13 4.1 EUT Configuration ..................................................................................................................................... 13 4.2 EUT Exercise ............................................................................................................................................. 13 4.3 Configuration of Tested System ................................................................................................................ 13 4.4 Equipment Used In Tested System ........................................................................................................... 13 4.5 Summary of Test Results ........................................................................................................................... 14 5. Description of Test Modes ........................................................................................................................... 15 6. Duty Cycle Measurement ............................................................................................................................. 16 7. RF Output Power Measurement .................................................................................................................. 17 7.1 Provisions Applicable ................................................................................................................................. 17 7.2 Measurement Procedure ........................................................................................................................... 17 7.3 Measurement Setup (Block Diagram of Configuration) ............................................................................ 17 7.4 Measurement Result ................................................................................................................................. 18 8. 6dB Bandwidth Measurement ...................................................................................................................... 21 8.1 Provisions Applicable ................................................................................................................................. 21 8.2 Measurement Procedure ........................................................................................................................... 21 8.3 Measurement Setup (Block Diagram of Configuration) ............................................................................ 21 8.4 Measurement Results ................................................................................................................................ 22 9. Power Spectral Density Measurement ........................................................................................................ 26 9.1 Provisions Applicable ........................................................................…

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Page 1 of 52 FCC Test Report Report No.: AGC12810240602FR01 FCC ID : 2BERM-K87 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : MECHANICAL KEYBOARD BRAND NAME : MCHOSE MODEL NAME : K87 APPLICANT : Shenzhen Zhishi intelligent Technology Co., LTD DATE OF ISSUE : Jul. 01, 2024 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation Of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC12810240602FR01 Page 2 of 52 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jul. 01, 2024 Valid Initial Release Report No.: AGC12810240602FR01 Page 3 of 52 Table of Contents 1. General Information ........................................................................................................................................ 5 2. Product Information ........................................................................................................................................ 6 2.1 Product Technical Description ..................................................................................................................... 6 2.2 Test Frequency List ..................................................................................................................................... 6 2.3 Related Submittal(S) / Grant (S) ................................................................................................................. 7 2.4 Test Methodology......................................................................................................................................... 7 2.5 Special Accessories ..................................................................................................................................... 7 2.6 Equipment Modifications ............................................................................................................................. 7 2.7 Antenna Requirement .................................................................................................................................. 7 3. Test Environment ............................................................................................................................................ 8 3.1 Address of the Test Laboratory .................................................................................................................... 8 3.2 Test Facility .................................................................................................................................................. 8 3.3 Environmental Conditions ........................................................................................................................... 9 3.4 Measurement Uncertainty ........................................................................................................................... 9 3.5 List of Equipment Use ............................................................................................................................... 10 4.System Test Configuration ............................................................................................................................ 12 4.1 EUT Configuration ..................................................................................................................................... 12 4.2 EUT Exercise ............................................................................................................................................. 12 4.3 Configuration of Tested System ................................................................................................................ 12 4.4 Equipment Used In Tested System ........................................................................................................... 12 4.5 Summary of Test Results ........................................................................................................................... 13 5. Description of Test Modes ........................................................................................................................... 14 6. Duty Cycle Measurement ............................................................................................................................. 15 7. RF Output Power Measurement .................................................................................................................. 16 7.1 Provisions Applicable ................................................................................................................................. 16 7.2 Measurement Procedure ........................................................................................................................... 16 7.3 Measurement Setup (Block Diagram of Configuration) ............................................................................ 16 7.4 Measurement Result ................................................................................................................................. 17 8. 6dB Bandwidth Measurement ...................................................................................................................... 20 8.1 Provisions Applicable ................................................................................................................................. 20 8.2 Measurement Procedure ........................................................................................................................... 20 8.3 Measurement Setup (Block Diagram of Configuration) ............................................................................ 20 8.4 Measurement Results ................................................................................................................................ 21 9. Power Spectral Density Measurement ........................................................................................................ 23 9.1 Provisions Applicable ......................................................................…

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Report No.: AGC12810240602AP02 Page 1 of 3 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC12810240602AP02 Page 2 of 3 AC POWER LINE CONDUCTED TEST SETUP RF CONDUCTED TEST SETUP - 2.4G Keyboard Report No.: AGC12810240602AP02 Page 3 of 3 RF CONDUCTED TEST SETUP - BLE Keyboard ****************************************End of Report*************************************