1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your Darmoshark GK82 Mechanical Gaming Keyboard. The GK82 is a versatile 87-key keyboard featuring dual-mode connectivity (2.4G wireless and wired USB), customizable LED backlighting, and hot-swappable mechanical switches, designed for both PC and laptop use.
2. Package Contents
Please check the package carefully to ensure all items are present:
- 1 x GK82 Mechanical Keyboard
- 1 x 2.4G Wireless Receiver
- 1 x USB Cable (for wired connection and charging)
- 1 x Keycap Puller
- 1 x User Manual (English/Chinese)
3. Specifications
| Feature | Detail |
|---|---|
| Model | GK82 |
| Keys | 87 Keys (Compact Layout) |
| Switches | OUTEMU Mechanical Switches (Blue/Red/Black options), Hot-swappable |
| Connectivity | 2.4G Wireless, Wired (USB) Dual Mode |
| Battery | Built-in 1300mAh Lithium Battery (approx. 500 hours without backlight) |
| Anti-Ghosting | Full N-Key Rollover |
| Backlight | Custom LED (Multicolor), 6 Lighting Modes |
| Keycap Material | PBT Plastic / ABS Two-Color Injection Molding |
| Panel Material | Aluminum Alloy |
| System Support | Windows XP/Vista/7/8/10, Mac OS X, IBM |
| Dimensions (L x W x H) | 350mm x 133mm x 37mm |
| Weight | Approx. 1.0 kg |

4. Setup
4.1 Initial Charging
Before first use, it is recommended to fully charge the keyboard's built-in 1300mAh lithium battery. Connect the keyboard to a USB power source (e.g., computer USB port, USB wall adapter) using the provided USB cable. The charging indicator (if present) will show charging status.

4.2 Wired Connection
To use the keyboard in wired mode:
- Connect one end of the provided USB cable to the keyboard's USB port.
- Connect the other end of the USB cable to an available USB port on your computer.
- The keyboard will be automatically recognized by your system and ready for use.
4.3 2.4G Wireless Connection
To use the keyboard in 2.4G wireless mode:
- Ensure the keyboard is sufficiently charged.
- Locate the 2.4G wireless receiver in the package.
- Plug the 2.4G wireless receiver into an available USB port on your computer.
- Perform the pairing procedure as described in Section 6.3.

5. Operating Instructions
5.1 Dual Mode Switching
The GK82 keyboard supports both wired and 2.4G wireless modes. The keyboard automatically detects the connection type. When the USB cable is connected, it operates in wired mode and charges the battery. When the USB cable is disconnected and the 2.4G receiver is plugged in and paired, it operates in wireless mode.
5.2 Anti-Ghosting (Full N-Key Rollover)
The keyboard features full N-Key Rollover, meaning all 87 keys can be pressed simultaneously and registered correctly, preventing ghosting or missed key presses during intense gaming or fast typing.

6. Function Keys and 2.4G Pairing
6.1 FN Key Combinations
The keyboard utilizes an FN (Function) key to access multimedia controls and other shortcuts. Press and hold the FN key, then press the desired F-key or other designated key.

| Combination | Function |
|---|---|
| FN + F1 | Open My Computer |
| FN + F2 | Open Web Browser |
| FN + F3 | Open Outlook |
| FN + F4 | Open Calculator |
| FN + F5 | Pause Playback |
| FN + F6 | Previous Track |
| FN + F7 | Play/Pause |
| FN + F8 | Next Track |
| FN + F9 | Change Light Effect |
| FN + F10 | Volume Down |
| FN + F11 | Volume Up |
| FN + F12 | Mute |
| FN + INS/HOME/PGUP/DEL/END/PGDN | Cycle through backlight effects |
6.2 LED Backlight Modes
The GK82 keyboard offers 6 distinct LED lighting modes. Use the FN + F9 key combination or FN + INS/HOME/PGUP/DEL/END/PGDN to cycle through these modes:
- Always Light
- Horizontal Streamer
- Vertical Streamer
- Gradual Light
- Light with Press (Reactive Lighting)
- No Light (Backlight Off)

6.3 2.4G Wireless Pairing Procedure
To pair your keyboard with the 2.4G wireless receiver:
- Press and hold the ESC key and the = (Equals) key simultaneously for 3 seconds.
- The low-power blue indicator light on the keyboard will turn on and remain steady, indicating it has entered pairing mode.
- Within 10 seconds, insert the 2.4G wireless receiver into an available USB port on your computer.
- If the pairing is successful, the blue indicator light on the keyboard will turn off.
- If pairing fails, the blue indicator light will turn off after 10 seconds, and the keyboard will exit pairing mode. Repeat the steps if necessary.
7. Maintenance
7.1 Cleaning the Keyboard
- Keycaps: Use the provided keycap puller to carefully remove keycaps. Clean them with a soft cloth dampened with mild soap and water, or a specialized keycap cleaner. Ensure they are completely dry before reattaching.
- Keyboard Body: Use a soft, dry cloth to wipe down the aluminum alloy panel and other surfaces. For stubborn dirt, a slightly damp cloth can be used, but avoid excessive moisture.
- Between Keys: Use compressed air to blow out dust and debris from between the keys. A small brush can also be used to dislodge particles.
7.2 Hot-Swappable Switches
The GK82 features hot-swappable OUTEMU mechanical switches, allowing you to change switches without soldering. This enables customization of typing feel or replacement of faulty switches.

To replace a switch:
- Carefully remove the keycap using the keycap puller.
- Use a switch puller (not included, but often comes with replacement switches) to gently pull the switch straight up from the PCB.
- Align the pins of the new switch with the holes on the PCB and press it firmly into place until it clicks.
- Reattach the keycap.
Caution: Ensure the switch pins are straight before inserting to avoid bending or damaging the PCB sockets.
8. Troubleshooting
- Keyboard not responding in wired mode:
- Ensure the USB cable is securely connected to both the keyboard and the computer.
- Try a different USB port on your computer.
- Test the keyboard on another computer if possible.
- Keyboard not responding in 2.4G wireless mode:
- Ensure the keyboard is charged.
- Verify the 2.4G receiver is properly plugged into a USB port.
- Repeat the 2.4G wireless pairing procedure (Section 6.3).
- Ensure there are no strong wireless interferences nearby.
- Backlight not working or stuck:
- Press FN + F9 or FN + INS/HOME/PGUP/DEL/END/PGDN to cycle through lighting modes.
- Ensure the keyboard battery is not critically low, as backlight intensity may be reduced or turned off to conserve power.
- Specific keys not working:
- If you have hot-swappable switches, try removing and re-inserting the affected switch.
- Consider replacing the faulty switch with a new one.
- Clean around the keycap and switch to remove any debris.
9. User Tips
- Battery Life: To maximize wireless battery life, consider turning off the LED backlight when not needed, especially during long typing sessions.
- Customization: Experiment with different OUTEMU switch types (if available) to find your preferred typing feel, thanks to the hot-swappable design.
- Keycap Compatibility: The PBT/ABS two-color injection keycaps are durable, but if you wish to customize further, ensure replacement keycaps are compatible with standard mechanical switch stems (Cherry MX style).
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided at the point of purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.





