2BERM-GX87MECHANICAL KEYBOARD

C5266091_X8_Ed.1 1/1 Letter of Authorization Shenzhen Zhishi intelligent Technology Co., LTD Company: Shenzhen Zhishi intelligent Technology Co., LTD Address: A3401 Rongde Times Square, Huaqiao Xincun Community, Henggang Street, Longgang District, Shenzhen, China Product Name: MECHANICAL KEYBOARD Model Number: GX87 FCC Identifier: 2BERM-GX87 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Jianbo Mo Date: Aug. 08, 2024 Title: Manager Signature of applicant:

Report No.: AGC12810240702AP03 Page 1 of 3 EXTERNAL PHOTOS TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC12810240702AP03 Page 2 of 3 FRONT VIEW OF EUT BACK VIEW OF EUT Report No.: AGC12810240702AP03 Page 3 of 3 LEFT VIEW OF EUT RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location 40mm*20mm FCC ID: 2BERM-GX87 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.

Report No.: AGC12810240702AP03 Page 1 of 6 INTERNAL PHOTOS VIEW OF EUT (PORT) OPEN VIEW OF EUT Report No.: AGC12810240702AP03 Page 2 of 6 VIEW OF BATTERY INTERNAL VIEW OF EUT (FIGURE 1) Report No.: AGC12810240702AP03 Page 3 of 6 INTERNAL VIEW OF EUT (FIGURE 2) INTERNAL VIEW OF EUT (FIGURE 3) Report No.: AGC12810240702AP03 Page 4 of 6 INTERNAL VIEW OF EUT (FIGURE 4) INTERNAL VIEW OF EUT (FIGURE 5) BT/2.4G Antenna Report No.: AGC12810240702AP03 Page 5 of 6 INTERNAL VIEW OF EUT (FIGURE 6) INTERNAL VIEW OF EUT (FIGURE 7) Report No.: AGC12810240702AP03 Page 6 of 6 INTERNAL VIEW OF EUT (FIGURE 8) ****************************************End of Report*************************************

Page 1 of 10 RF Exposure Report Report No.: AGC12810240702FH01 FCC ID : 2BERM-GX87 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : MECHANICAL KEYBOARD BRAND NAME : MCHOSE MODEL NAME : GX87 APPLICANT : Shenzhen Zhishi intelligent Technology Co., LTD DATE OF ISSUE : Aug. 05, 2024 STANDARD(S) : FCC KDB 447498 D01 V06 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC12810240702FH01 Page 2 of 10 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Aug. 05, 2024 Valid Initial Release Report No.: AGC12810240702FH01 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.: AGC12810240702FH01 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 GX87 Series Model(s) N/A Difference Description N/A Date of receipt of test item Jul. 18, 2024 Date of Test Jul. 18, 2024 to Aug. 05, 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 Jack Gui (Project Engineer) Aug. 05, 2024 Reviewed By Calvin Liu (Reviewer) Aug. 05, 2024 Approved By Max Zhang (Authorized Officer) Aug. 05, 2024 Report No.: AGC12810240702FH01 Page 5 of 10 2. Product Information 2.1 Product Technical Description Frequency Band (Operating) Bluetooth: 2.402GHz ~ 2.480GHz 2.4G: 2405MHz-2475MHz Hardware Version X79 916 DN LED US UK Software Version V1.0 Modulation Type BR GFSK_1Mbps ; EDR π /4-DQPSK_2Mbps 8DPSK_3Mbps BLE GFSK 1Mbps GFSK 2Mbps 2.4G: GFSK Maximum Transmitter Power BR: -3.894dBm BLE: -3.955dBm 2.4G: -3.359dBm 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 2.34dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Report No.: AGC12810240702FH01 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 Re…

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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 Polarization PCB 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 36.0 mm Dongguan Fengqi Technology Co., Ltd. Room 101, No. 104, Dalangshuixin Road, Dalang Town, Dongguan City,Guangdong Province Antenna manufacturer Manufacturer Address 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 57 FCC Test Report Report No.: AGC12810240702FR01 FCC ID : 2BERM-GX87 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : MECHANICAL KEYBOARD BRAND NAME : MCHOSE MODEL NAME : GX87 APPLICANT : Shenzhen Zhishi intelligent Technology Co., LTD DATE OF ISSUE : Aug. 05, 2024 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC12810240702FR01 Page 2 of 57 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Aug. 05, 2024 Valid Initial Release Report No.: AGC12810240702FR01 Page 3 of 57 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 Receiver Input Bandwidth ......................................................................................................................... 7 2.6 Equally Average Use of Frequencies and Behaviour................................................................................ 7 2.7 Pseudorandom Frequency Hopping Sequence ........................................................................................ 8 2.8 Special Accessories .................................................................................................................................. 9 2.9 Equipment Modifications ........................................................................................................................... 9 2.10 Antenna Requirement ............................................................................................................................. 9 3. Test Environment .......................................................................................................................................... 10 3.1 Address of The Test Laboratory .............................................................................................................. 10 3.2 Test Facility .............................................................................................................................................. 10 3.3 Environmental Conditions ....................................................................................................................... 11 3.4 Measurement Uncertainty ....................................................................................................................... 11 3.5 List of Equipment Used ........................................................................................................................... 12 4. System Test Configuration ........................................................................................................................... 14 4.1 EUT Configuration ................................................................................................................................... 14 4.2 EUT Exercise ........................................................................................................................................... 14 4.3 Configuration of Tested System .............................................................................................................. 14 4.4 Equipment Used in Tested System ......................................................................................................... 15 4.5 Summary of Test Results ........................................................................................................................ 16 5. Description of Test Modes ........................................................................................................................... 17 6. RF Output Power Measurement .................................................................................................................. 18 6.1 Provisions Applicable .............................................................................................................................. 18 6.2 Measurement Procedure ......................................................................................................................... 18 6.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 18 6.4 Measurement Result ............................................................................................................................... 18 7. 20dB Bandwidth and 99% Occupied Bandwidth Measurement ............................................................... 21 7.1 Provisions Applicable .............................................................................................................................. 21 7.2 Measurement Procedure ......................................................................................................................... 21 7.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 21 7.4 Measurement Results ............................................................................................................................. 22 8. Conducted Band Edge and Out-of-Band Emissions ...............…

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Report No.: AGC12810240702AP02 Page 1 of 3 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC12810240702AP02 Page 2 of 3 AC POWER LINE CONDUCTED TEST SETUP RF CONDUCTED TEST SETUP (BT) Report No.: AGC12810240702AP02 Page 3 of 3 RF CONDUCTED TEST SETUP (2.4G) ****************************************End of Report*************************************