FCC ID: 2A4MQ-R75 Mechanical keyboard

BT 2.4G WINDOWS WindowsFn+AWindows MAC MACFN+SMAC MACALT R75 User manual mechanical wireless keyboard 166-85101-01

323(L)142.3(W)41.63(H)2 80

/RGB USB/2.4G/BT Gasket 12 1 1 1 1 1USB Type-c Z

:5V 1A FN 1.Caps Lock 2.WIN Lock 3. BT,2.4GFn+ENTER 10%

20%

100%

1.B 2.Fn+Q/W/E.3Fn+QQ 3./BT R75 3.0PCWindows7, R75 5.0Windows8 4. 2.4G:

1.G 2.Fn+PPP 3. 3 Back 2 Back

RGB Space bar windows mac ScrLK Pause End PrtSc Ins BT BT3.0,BT5.1 PC:Windows 7 Mac:macos X 10.6 Snow Leopard iosiPad/iphone 5 Android:5.0

/2.4G USB PC:Windows 7 Mac:macos X 10.6 Snow Leopard RK RK

400-829-7770 RKwww.rkgaming.com www.rkgaming.com/Download/1/

PRODUCT BASIC WIRED MODE/INDICATOR LIGHTS/KNOB FUNCTION BATTERY REMINDER BT CONNECTIVITY 2.4G CONNECTIVITY BACKLIGHT CONTROL CUSTOM BACKLIGHT SET MULTIMEDIA KEYS FOR WINDOWS MULTIMEDIA KEYS FOR MAC SECONDAEY COMBINATION FUNCTION KEYS SYSTEM REQUIREMENTS RK MECHANICAL KEYBOARD WARRANTY WARRANTY CARD KNOB FUNCTION ClockwiseVolume+

AnticlockwiseVolume-

PressMute Battery Level Reminder WIRED MODE Z Keyboard 323(L)142.3(W)41.63(H)2 Package content Size Layout Backlight 80keys Monochrome/RGB Mechanical switches Switch Version Structure Gasket Mount USB wired/2.4G WIFI/BT Warranty 12 months,misuse and man-madedamage are not included 1Keyboard 1Manua 12.4G Receiver 1xKeycaps & Switch Puller 1xUSB Type-c cable Recommend: Using 5V 1A Rated power to charge keyboard Fn blinks at low voltage 1.Caps Lock 2.WIN Lock 3.Charging Indicator: On While Charging, Off When Full. In BT 2.4G modePress and hold Fn+Enter to view the batteryevelindicator For Example:

The backlight is bright, indicating that the keyboard is 10% of the power at this time The backlight is on at the same time, indicating that thekeyboard is 20% of the power at this time Similarly The backlight is on at the same time, indicating that thekeyboard power is 100% at this time 1.Place the switch toB side. 2.Press and hold the Fn key together with O/W/E for three seconds. For example,pressing Fn + Q together and the Q key will blink quickly , indicating pairingIf the Q key blinks slowly , indicating linking. 3.Turn on the bluetooth of computer/phone/other devices, find and link to the keyboard whose name on the list shows as R75RGB 3.0 (under Windows 7 systems) ,R75RGB 5.0 (Windows 8 above, other mobile devices etc.) 4.Once the pairing is successful, the Q/W/E key will stop blinking. 2.4G Paring:

1.Place the switch to "Gside. 2.Press Fn+P for 3 seconds,and the P key will blink quickly, then insert the dongle into the computer and pair. 3.lf the P key flickers slowly, it indicates that your device is successfully linked to the computer. Receiver storage location Note:

3 Fixed lighting effect, not recording Press to customize backlight Press Back Enter backlit recording mode Backlight Brightness +

(RGB version only) Backlight Monochrome Switching Backlight Brightness -

Backlight Mode Switching Backlight Speed -

Space bar Press And Hold For Three Seconds To Restore Factory Settings Press the keys which you want to record the backlight , and repeat this steps Backlight Speed +

Windows Lock When it is done , pressing Back again willsave and exit the backlit recording mode Windows system(Fn + A: switch to Windows system) MAC system(Fn + S: switch to Mac system) MAC system Windows key and ALT key swap Computer Last Song Switch to windows system Switch to mac system BT Mode Browser Mailbox Calculator Player Stop Play / Pause Next Song Mute Volume-

Volume+

Screen Brightness -

Play / Pause Screen Brightness +

Next Song Keyboard Backlight Brightness -

Keyboard Backlight Brightness +

Last Song Mute Volume-

Volume+

ScrLK Pause End PrtSc Ins Device With Bluetooth3.0, 5.1 or later PC: Windows 7 or Later Mac: macOS X 10.6 Snow Leopard or Later ioS: All iPads/iPhone 5 or Later Android: 5.0 Lollipop or Later Wired/2.4Ghz Mode Comnputer With Available USB port PC: Windows 7 or Later Mac: macOS X 10.6 Snow Leopard or Later Q/W/E 3BT Fn+Q/W/E,BT3BT(2.4G2.4G)ZSimilarly, follow the steps above to store 3 aroups of different BT devices, and press FN+0/W/E shortly to switch betweendeyices. (Kind Reminder: Please ensure that you have stored the 3 different groups of bluetooth devices before switchingbetween them.)(Kinder reminder: The receiver is factory paired and does not need to bepaired again.)Z FCC Caution:

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. Any 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Page 1 of 1 FCC ID: 2A4MQ-R75 LABEL AND LOCATION

(Size: L7.5cm x 3.5cm) Label Location Shenzhen LCS Compliance Testing Laboratory Ltd. Add: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel: +(86) 0755-82591330 | E-mail: webmaster@lcs-cert.com | Web: www.lcs-cert.com Scan code to check authenticity

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 U.S. Agent Designation 9/20/2023 Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2A4MQ-R75):

Name and company of U.S. agent:

FCC US Agent, LLC Physical U.S. address of agent:

3722 Illinois Avenue, Saint Charles, IL, 60174, USA FRN of U.S. agent:

0033402884 Email address of U.S. agent:

Support@FCCUSAgent.com FCC US Agent, LLC acknowledges their obligation to accept service of process on behalf of Jingheng Tengwei

(Huizhou) Electronic Technology Co., Ltd.. Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. with the FRN 0031988330 accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Zhang Chuang ling Manager Signature Tim Payne Manager Jingheng Tengwei (Huizhou) Electronic Technology FCC US Agent, LLC Co., Ltd. 5 0 V

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Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs 0.457 and 0.459 of the Commissions Rules (47 C.F.R.) and Section 552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products:

FCC ID 2A4MQ-R75 Model name R75, RK-R75, RK851 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are:

the Operational Description the Block Diagram the Schematics the Parts Lists the Tune Up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2023-09-21 Signature Date Name / Title: Chuangling Zhang / Manager Company: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Address: No. 8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Phone: +86-15817460633 Fax: +86-15817460633 E-Mail: 313317143@qq.com

Covered Equipment Identification Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(ii) of the Commissions Rules (47 C.F.R.) we attest as follows:

We, applicant Company Name:

Address:

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. No. 8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Phone: +86-15817460633 certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2023-09-21 Signature Date Name / Title: Chuangling Zhang / Manager Company: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Address: No. 8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Phone: +86-15817460633 Fax: +86-15817460633 E-Mail: 313317143@qq.com

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commissions Rules (47 C.F.R.) we attest as follows for the product listed below:

FCC ID 2A4MQ-R75 We, applicant Model name R75, RK-R75, RK851 Company Name:

Address:

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. No. 8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Phone: +86-15817460633 certify that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2023-09-21 Signature Date Name / Title: Chuangling Zhang / Manager Company: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Address: No. 8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Phone: +86-15817460633 Fax: +86-15817460633 E-Mail: 313317143@qq.com

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. No. 8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Date: September 21, 2023 FCC ID: 2A4MQ-R75 Model Number: R75, RK-R75, RK851 To: Federal Communication Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21048 To Whom It May Concern, We, Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. hereby declare that our product (Mechanical keyboard) Model Number: R75, RK-R75, RK851 board, Schematic, Hardware version, Software version, structure and internal photos are same, named differently due to marketing purposes. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely,

(Signed) Name/Title: Chuangling Zhang / Manager Company: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Address: No. 8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Tel: +86-15817460633 Fax: +86-15817460633 E-Mail: 313317143@qq.com