1. Introduction
This manual provides instructions for the Rii RK105 Wired Backlit Keyboard and Mouse Combo. This product is designed for general office and home use, offering a comfortable and responsive input experience with customizable backlighting.

Image 1.1: The Rii RK105 Wired Backlit Keyboard and Mouse Combo. This image displays the full keyboard and mouse, both connected via USB cables, showcasing the blue backlighting.
2. Setup
The Rii RK105 keyboard and mouse combo is designed for plug-and-play functionality, requiring no additional drivers for basic operation.
2.1 Connecting the Devices
- Locate an available USB port on your computer.
- Plug the USB connector of the keyboard into the USB port.
- Plug the USB connector of the mouse into another available USB port.
- The operating system will automatically detect and install the necessary drivers. The devices are ready for use once detected.
2.2 System Compatibility
This combo is compatible with the following operating systems:
- Windows 98/XP/7/8/10/Vista
- Mac OS
- Linux
3. Operating Instructions
3.1 Keyboard Backlight Control
The keyboard features three backlight colors (Cyan, Green, Blue) and adjustable brightness.

Image 3.1: Close-up of the keyboard's backlight control key, indicated by a sun icon.
- Fn + Light Key: Pressing the 'Fn' key simultaneously with the 'Light' key (usually located near the 'Scroll Lock' key) activates the breathing backlight mode.
- Light Key (single press): Repeatedly pressing the 'Light' key cycles through the available single-color backlight modes (Cyan, Green, Blue).
- Fn + Page Up / Page Down: Use 'Fn' + 'Page Up' to increase backlight brightness and 'Fn' + 'Page Down' to decrease it.
- Light Key (three presses): To turn off the backlight, press the 'Light' key three times consecutively.

Image 3.2: The keyboard illuminated in Cyan, Green, and Blue backlight colors, demonstrating the available options.
3.2 Multimedia Shortcut Keys
The keyboard includes 12 multimedia shortcut keys for quick access to various functions. These are activated by holding the 'Fn' key and pressing the corresponding 'F' key (F1-F12).

Image 3.3: Close-up of the keyboard's function keys, highlighting the multimedia icons.
| Key Combination | Function |
|---|---|
| Fn + F1 | Media Player |
| Fn + F2 | Volume Down |
| Fn + F3 | Volume Up |
| Fn + F4 | Mute |
| Fn + F5 | Play/Stop |
| Fn + F6 | Previous Track |
| Fn + F7 | Play/Pause |
| Fn + F8 | Next Track |
| Fn + F9 | |
| Fn + F10 | Web Home |
| Fn + F11 | My Computer |
| Fn + F12 | Calculator |
3.3 Mouse DPI Adjustment
The mouse features adjustable DPI (Dots Per Inch) settings to change cursor sensitivity. The available DPI settings are 800, 1200, and 1600 DPI.

Image 3.4: Close-up of the Rii RK105 mouse, showing the DPI adjustment button located behind the scroll wheel.
- To change the DPI setting, press the DPI button located on the top of the mouse, usually behind the scroll wheel. Each press will cycle through the available DPI settings.
- The mouse backlight may change color or pattern to indicate the current DPI setting.
4. Maintenance
Proper maintenance ensures the longevity and optimal performance of your Rii RK105 combo.
4.1 Cleaning
- Keyboard: The keycaps are designed to be oil-resistant. For general cleaning, use a soft, dry cloth. For deeper cleaning, gently wipe with a slightly damp cloth (water only) and ensure the keyboard is completely dry before use. Avoid harsh chemicals or abrasive materials.
- Mouse: Wipe the mouse surface with a soft, dry cloth. Use a cotton swab for cleaning around the scroll wheel and sensor area.
- General: Disconnect both devices from the computer before cleaning.
4.2 Storage
When not in use for extended periods, store the keyboard and mouse in a cool, dry place away from direct sunlight and extreme temperatures.
5. Troubleshooting
If you encounter issues with your Rii RK105 combo, refer to the following common solutions:
| Problem | Solution |
|---|---|
| Keyboard/Mouse not responding |
|
| Keyboard backlight not working |
|
| Mouse cursor movement is erratic or slow |
|
| Multimedia keys not functioning |
|
6. Specifications
Detailed technical specifications for the Rii RK105 Wired Backlit Keyboard and Mouse Combo.

Image 6.1: Diagram showing the dimensions of the Rii RK105 keyboard and mouse.
| Feature | Detail |
|---|---|
| Model | RK105 |
| Connectivity | Wired USB |
| Keyboard Layout | Standard UK Layout, 105 Keys |
| Keyboard Dimensions (L x W x H) | 439 x 132 x 30 mm (17.12 x 5.39 x 1.18 inches) |
| Keyboard Cable Length | 1.4 meters |
| Keyboard Backlight Colors | Cyan, Green, Blue (3 colors) |
| Mouse DPI Settings | 800 / 1200 / 1600 DPI |
| Mouse Dimensions (L x W x H) | 131 x 73 x 42 mm (5.15 x 2.87 x 1.65 inches) |
| Mouse Cable Length | 1.7 meters |
| Material | High-quality ABS |
| Compatible Operating Systems | Windows 98/XP/7/8/10/Vista, Mac OS, Linux |
7. Warranty and Support
Rii is committed to providing quality products and customer satisfaction.
7.1 After-Sales Service
If you encounter any problems during the use of your Rii RK105 keyboard and mouse combo, please contact the seller directly through Amazon Message for assistance. Rii provides 100% after-sales service to address any concerns you may have.