Introduction
This manual provides instructions for the setup, operation, and maintenance of your CHONCHOW 991b RGB Gaming Keyboard and Mouse Combo. Please read this manual thoroughly before use to ensure proper functionality and longevity of the product.
Package Contents
Verify that all items are present in the package:
- 1 x CHONCHOW RGB Gaming Keyboard
- 1 x CHONCHOW LED Gaming Mouse
- 1 x Wear-resistant Mouse Pad

Image: The CHONCHOW 991b RGB Gaming Keyboard and Mouse Combo, including the mouse pad, displayed with its retail packaging.
Specifications
| Feature | Detail |
|---|---|
| Brand | CHONCHOW |
| Model Number | 991b |
| Color | Black |
| Connectivity | USB (Corded Electric) |
| Keyboard Size | 17.5 x 5.3 x 1.2 inches |
| Number of Keys | 104 |
| Anti-Ghosting | 19 keys |
| Keyboard Backlight | RGB LED (7 modes, 8 brightness levels, 4 speed levels) |
| Mouse Size | 4.7 x 2.8 x 1.6 inches |
| Mouse DPI | 800/1600/3200/4800 (Adjustable) |
| Mouse Movement Detection | Optical |
| Click Life | Over 10 million times |
| Compatibility | Windows XP/7/8/10/Vista, Mac OS, Laptop, Desktop, PS4, Xbox One, Switch |
| Batteries Required | No |
Setup
The CHONCHOW 991b keyboard and mouse combo is designed for plug-and-play functionality, requiring no additional software installation.
- Locate an available USB port on your computer or compatible gaming console.
- Connect the USB cable from the keyboard to the USB port.
- Connect the USB cable from the mouse to another available USB port.
- The devices should be automatically recognized and ready for use.

Image: Detailed view of the keyboard's USB cable, adjustable height brackets, and rubber non-slip pads.
Operating Instructions
Keyboard Operation
The keyboard features a standard 104-key QWERTY layout with RGB backlighting and multimedia shortcuts.
- Backlight Control: The keyboard offers 7 preset RGB backlight modes, 8 brightness levels, and 4 speed levels.
- FN + PRTSC: Press these keys simultaneously to turn the backlight on or off.
- FN + SCROLL: Press these keys simultaneously to cycle through 7 different lighting modes.
- FN + INS: Press these keys simultaneously to change the backlight color within certain modes.
- FN + Left/Right Arrow: Adjust the backlight speed.
- FN + Up/Down Arrow: Adjust the backlight brightness (8 levels).
- Anti-Ghosting: The keyboard supports 19 anti-ghosting keys for improved gaming performance.
- Adjustable Height: Use the two hidden brackets on the underside of the keyboard to adjust the typing angle for comfort.

Image: The CHONCHOW 991b keyboard showcasing its 7 backlight lighting modes and 8 brightness levels, along with key combinations for control.
Mouse Operation
The ergonomic gaming mouse features adjustable DPI settings and LED lighting.
- DPI Adjustment: Cycle through DPI settings of 800, 1600, 3200, and 4800 by pressing the DPI button located on the top of the mouse.
- Ergonomic Design: The mouse is designed for comfortable use, reducing wrist strain during extended sessions.
- LED Lighting: The mouse features integrated LED lighting that changes colors automatically.

Image: The CHONCHOW gaming mouse, highlighting its ergonomic design and LED lighting.
Maintenance
Proper maintenance ensures the longevity and performance of your gaming combo.
- Cleaning: Use a soft, dry cloth to wipe down the keyboard and mouse. For stubborn dirt, a slightly damp cloth can be used, ensuring no liquid enters the device.
- Waterproof Keyboard: The keyboard features a waterproof design to protect against accidental splashes. However, avoid submerging the keyboard in water.
- Mouse Pad: The wear-resistant mouse pad can be cleaned with a damp cloth and mild soap if necessary.

Image: The CHONCHOW 991b keyboard with water droplets, illustrating its waterproof design feature.
Troubleshooting
If you encounter issues with your CHONCHOW 991b combo, refer to the following common solutions:
- Device Not Recognized: Ensure both the keyboard and mouse USB cables are securely plugged into your computer or console's USB ports. Try different USB ports.
- No Backlight/LEDs: For the keyboard, ensure the backlight is not turned off (FN + PRTSC). For both devices, check USB connection.
- Keys Not Responding: Disconnect and reconnect the keyboard. Test on another computer if possible to rule out system-specific issues.
- Mouse Cursor Not Moving: Ensure the mouse is connected. Clean the optical sensor on the underside of the mouse. Test on a different surface.
- Lag or Unresponsive Input: Ensure no other high-bandwidth USB devices are interfering. Try connecting to a different USB port.
Warranty and Support
CHONCHOW provides the following warranty and support for this product:
- Quality Guarantee: A 30-day quality guarantee is provided from the date of purchase.
- After-Sales Warranty: A 365-day after-sales warranty covers manufacturing defects and malfunctions under normal use.
For further assistance or warranty claims, please contact CHONCHOW customer support through your retailer or the official CHONCHOW website.

