Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your surmen 104-key RGB Wired Mechanical Gaming Keyboard. This full-size keyboard features PBT keycaps, linear red switches, and dynamic RGB backlighting, designed for both typing and gaming applications.

Image: The surmen 104-key RGB Wired Mechanical Gaming Keyboard, showcasing its full layout with pink and white PBT keycaps and visible RGB backlighting.
Setup
- Unpacking: Carefully remove the keyboard and any included accessories from the packaging.
- Connection: Connect the USB-A cable from the keyboard to an available USB-A port on your computer (PC compatible).
- Driver Installation: The keyboard is typically plug-and-play and does not require specific driver installation for basic functionality. Your operating system should automatically recognize the device.
- Placement: Position the keyboard on a stable, flat surface. Utilize the adjustable rear kickstands for a preferred typing angle.
Operating Instructions
Key Features
- Linear Red Switches: These mechanical switches offer a smooth, linear keystroke with a low actuation force of approximately 45g. They are designed for quick response and reduced finger fatigue, suitable for both typing and gaming. Red switches are also relatively quiet compared to other mechanical switch types.
- PBT Keycaps: The keyboard features PBT (Polybutylene Terephthalate) keycaps, known for their durability and resistance to shine over time. The legends on these keycaps are designed to be long-lasting.
- Full-Key Anti-Ghosting (N-Key Rollover): This feature ensures that every keypress is registered accurately, even when multiple keys are pressed simultaneously. This is crucial for fast-paced gaming and typing.

Image: A close-up view of a red mechanical switch, highlighting its linear design and transparent housing.

Image: A visual representation illustrating the full key conflict-free capability of the keyboard, ensuring all simultaneous key presses are registered.
RGB Backlighting Control
The keyboard offers 18 dynamic RGB backlight modes to customize your experience.
- Turn On/Off Backlight: Press FN + Pause to toggle the backlight on or off.
- Switch Backlight Modes: Press FN + INSERT / DELETE / HOME / END to cycle through the various RGB backlight modes.

Image: The keyboard displaying the FN and Pause keys, indicating their use for turning the backlight on or off.

Image: A diagram illustrating the FN key combined with INSERT, DELETE, HOME, or END keys to switch between different backlight modes.
Multimedia and Shortcut Keys
Access various functions using the FN key in combination with the F1-F12 keys.
| Key Combination | Function |
|---|---|
| FN + F1 | Media Player |
| FN + F2 | Volume Down |
| FN + F3 | Volume Up |
| FN + F4 | Mute |
| FN + F5 | Stop Playback |
| 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 |
To restore settings, press FN + ESC for 3 seconds, then F1 F3 F5.
Windows Key Lock: Activate Windows Key Lock mode to prevent accidental interruptions during gaming or other critical tasks. This function is typically toggled by pressing FN + Win key.

Image: A circular diagram illustrating the various multimedia functions accessible via FN key combinations (F1-F12).
Ergonomic Design
The keyboard is designed with user comfort in mind:
- Adjustable Rear Kickstands: Two foldable kickstands on the rear allow you to adjust the typing angle for optimal comfort.
- Stair-Step Keycap Design (OEM Profile): This design helps maintain a natural arm and wrist position, reducing strain during prolonged use.
- Rubber Pads: Four rubber pads on the base provide stability and prevent the keyboard from sliding during use.

Image: A side profile of the keyboard, illustrating the adjustable rear feet and the ergonomic XDA keycap profile.
Maintenance
- Regular Cleaning: Use a soft brush or compressed air to remove dust and debris from between the keycaps.
- Keycap Cleaning: For deeper cleaning, keycaps can be carefully removed using the included keycap puller. Clean them with a mild soap solution and a soft cloth, ensuring they are completely dry before reattaching.
- Surface Cleaning: Wipe the keyboard surface with a slightly damp, lint-free cloth. Avoid using harsh chemicals or abrasive materials.
- Cable Care: Avoid sharp bends or kinks in the USB cable to prevent damage.
Troubleshooting
| Problem | Possible Cause / Solution |
|---|---|
| Keyboard not responding / No input |
|
| Backlight not working or flickering |
|
| Specific keys not working or sticking |
|
| Multimedia keys not functioning |
|
Specifications
| Feature | Detail |
|---|---|
| Brand | surmen |
| Model | 104 Ying |
| Keyboard Description | Mechanical |
| Switch Type | Linear Red Switch |
| Keycap Material | PBT |
| Number of Keys | 104 |
| Connectivity Technology | USB-A (Wired) |
| Compatible Devices | PC |
| Backlighting | RGB (18 modes) |
| Special Features | Backlit, Hotkeys and Media Keys, Full-Key Anti-Ghosting, Adjustable Typing Angle |
| Dimensions (L x W x H) | 44.78 x 18.29 x 4.6 cm (approx.) |
| Weight | 1.33 kg (approx.) |
| Included Components | Keycap Puller |
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation included with your purchase or contact the manufacturer directly. Keep your proof of purchase for warranty claims.
Manufacturer: GTSP