XEN-K104RKeyboard

User Menu for K104R 1、How to use K104R is a keyboard which support both USB and RF interface. For USB interface, just connect cable with micro USB connector and USB type A connector between keyboard and PC. PC will install HID driver for keyboard automatically. After installation complete, keyboard is ready to use now. For RF interface, find the dongle inside the gift box and plug into PC. PC will install HID driver for dongle automatically. Batteries for keyboard should be installed before use. After all installation complete, keyboard is ready to use now. 2、Remark If both USB cable and dongle are plug into PC, USB interface is selected by keyboard. RF signal is working at 2.4 GHz ISM band. Keyboard and dongle are set to pair at factory. If RF interface of keyboard is not working, please check to make sure batteries are installed correctly. If problem still, please try to re-pair keyboard and dongle by hot key Fn + Esc while dongle plug into PC. LED for pairing should flash after hot key pressed. Re-pair complete When LED stops flashing. Keep keyboard and dongle as close as possible while pairing. 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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.

Heng Yu Electronic Manufacturing Co. Ltd. Agent Authorization Company: Heng Yu Electronic Manufacturing Co. Ltd. Address: Room 1503-5, Nan Fung Commercial Centre, 19 Lam Lo Hong Kong, China Product Name: Keyboard Model Number(s): K104R Product Description: Keyboard We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022-12-07 Name: H.K. Chan Company: Heng Yu Electronic Manufacturing Co., Ltd.

Heng Yu Electronic Manufacturing Co. Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022-08-05 Subject; Request for Confidentiality FCC ID: XEN-K104R To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Heng Yu Electronic Manufacturing Co. Ltd. Contact person: H.K. Chan

Report No.: AGC00688210907AP03 Page 1 of 4 EXTERNAL PHOTOS ALL VIEW OF EUT TOP VIEW OF EUT Report No.: AGC00688210907AP03 Page 2 of 4 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC00688210907AP03 Page 3 of 4 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC00688210907AP03 Page 4 of 4 RIGHT VIEW OF EUT PORT VIEW OF EUT ****************************************End of Report****************************************

FCC ID Label Location 25mm&45mm FCC ID: XEN-K104R

Report No.: AGC00688210907AP03 Page 1 of 2 INTERNAL PHOTOS OPEN VIEW OF EUT ANTENNA CLOSE-UP PHOTO-1 2.4G Antenna Report No.: AGC00688210907AP03 Page 2 of 2 INTERNAL VIEW OF EUT (FIGURE 1) INTERNAL VIEW OF EUT (FIGURE 2) ****************************************End of Report****************************************

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description Keyboard Model Name K104R FCC ID XEN-K104R 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√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 the nearest mW and mm before calculation 3. CALCULATION P t = -3.023dBm=0.50mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(0.50mW /5mm) .[√2.402GHz)]=0.15<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

On-board Antenna Datasheet 1. On-board antenna detailed size specifications: 2. Features ·Ultra-small size：2.8*9.95mm ·50 ohm impedance ·Maximum gain: 2.3dBi ·Operates in the 2.4GHz band ·Manufacture：Nanjing Qinheng Microelectronics Co., Ltd 3. Antenna S parameter 10dB operating bandwidth: 156MH Center band S11:[email protected] 4. Antenna gain 2.4GHz: Maximum gain of 2dBi E-Side: H-side: 2.44GHz: Maximum gain of 2dBi E-side H-side: 2.48GHz: Maximum gain 2dBi E-Side: H-side:

Page 1 of 42 FCC Test Report Report No.: AGC00688210907FE02 FCC ID : XEN-K104R APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Keyboard BRAND NAME : Heng Yu MODEL NAME : K104R APPLICANT : Heng Yu Electronic Manufacturing Co., Ltd. DATE OF ISSUE : Aug. 03, 2022 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC00688210907FE02 Page 2 of 42 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Aug. 03, 2022 Valid Initial Release Report No.: AGC00688210907FE02 Page 3 of 42 TABLE OF CONTENTS 1. VERIFICATION OF COMPLIANCE .................................................................................................................. 5 2. GENERAL INFORMATION .............................................................................................................................. 6 2.1. PRODUCT DESCRIPTION ........................................................................................................................ 6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................... 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. MEASUREMENT UNCERTAINTY ................................................................................................................... 8 4. DESCRIPTION OF TEST MODES ................................................................................................................... 9 5. SYSTEM TEST CONFIGURATION ................................................................................................................ 10 5.1. CONFIGURATION OF TESTED SYSTEM ............................................................................................... 10 5.2. EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 10 5.3. SUMMARY OF TEST RESULTS .............................................................................................................. 10 6. TEST FACILITY ............................................................................................................................................... 11 7. PEAK OUTPUT POWER ................................................................................................................................ 12 7.1. MEASUREMENT PROCEDURE .............................................................................................................. 12 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 12 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 13 8. BANDWIDTH .................................................................................................................................................. 15 8.1. MEASUREMENT PROCEDURE .............................................................................................................. 15 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 15 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 15 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 19 9.1. MEASUREMENT PROCEDURE .............................................................................................................. 19 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 19 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 19 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 19 10. MAXIMUM CONDUCTED OUTPUT POWER SPECTRAL DENSITY ........................................................ 26 10.1. MEASUREMENT PROCEDURE ............................................................................................................ 26 10.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 26 10.3. MEASUREMENT EQUIPMENT USED .................................................................................................. 26 10.4. LIMITS AND MEASUREMENT RESULT................................................................................................ 26 Report No.: AGC00688210907FE02 Page 4 of 42 11. RADIATED EMISSION ................................................................................................................................. 28 11.1. MEASUREMENT PROCEDURE ............................................................................................................ 28 11.2. TEST SETUP .......................................................................................................................................... 29 11.3. LIMITS AND MEASUREMENT RESULT..........................................................................................…

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Report No.: AGC00688210907AP02 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC00688210907AP02 Page 2 of 2 RF CONDUCTED TEST SETUP ****************************************End of Report*************************************