Introduction
The E-YOOSO K600 is a 104-key retro mechanical gaming keyboard designed for PC desktop use. It features rainbow LED backlighting, brown mechanical switches, and a full N-key rollover anti-ghosting design for precise input. The unique round keycaps provide a distinct typewriter aesthetic.
This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your K600 keyboard to ensure optimal performance and longevity.
Package Contents
- 1x E-YOOSO K600 Mechanical Keyboard
- 1x USB Cable
- 1x User Manual
Setup
To set up your E-YOOSO K600 keyboard, follow these steps:
- Unpack the keyboard and the included USB cable from the packaging.
- Connect the USB cable to the USB port on the keyboard.
- Plug the other end of the USB cable into an available USB port on your computer (PC, laptop, etc.).
- The keyboard is plug-and-play and should be automatically recognized by your operating system. No additional drivers are typically required.

Figure 1: The E-YOOSO K600 keyboard showcasing its compact design and overall layout with dimensions. This design helps save desk space while maintaining full functionality.
Operating Instructions
Key Features
- Brown Mechanical Switches: The keyboard is equipped with OUTEMU brown switches, which provide a tactile bump and a quiet click sound. These switches offer a balanced experience for both typing and gaming, characterized by their responsive and sensitive feedback. All keys support DIY replacement.
- N-Key Rollover & Anti-Ghosting: The K600 features full 104-key N-key rollover and anti-ghosting technology. This ensures that every key press is registered accurately, even when multiple keys are pressed simultaneously, which is crucial for fast-paced gaming and typing.

Figure 2: A detailed view of the mechanical brown switches used in the E-YOOSO K600 keyboard, illustrating their internal structure and tactile design.

Figure 3: An illustration of the anti-ghosting capability of the E-YOOSO K600, ensuring all simultaneous key presses are registered accurately.
Backlight Control
The K600 keyboard features rainbow LED backlighting with multiple modes and customization options:
- Change Backlight Mode: Press FN + INS to cycle through 9 different backlight modes.
- Game Mode Backlights: Press FN + 1-5 to activate pre-set game specific lighting modes.
- Custom Color Setting: After selecting a game mode (FN+1-5), press FN + HOME to enter custom color setting mode. In this mode, you can set the color of individual keys without needing additional software or drivers.

Figure 4: The E-YOOSO K600 keyboard highlighting the FN+INS key combination for cycling through the 9 LED backlight modes.
Function Shortcuts
Access various multimedia and system functions using the FN key in combination with the F1-F12 keys:
- FN + F1: My Computer
- FN + F2: Search
- FN + F3: Calculator
- FN + F4: Media Player
- FN + F5: Previous Track
- FN + F6: Next Track
- FN + F7: Play/Pause
- FN + F8: Stop
- FN + F9: Mute
- FN + F10: Volume Down
- FN + F11: Volume Up
- FN + F12: Lock Keyboard
Maintenance
Proper maintenance ensures the longevity and performance of your E-YOOSO K600 keyboard:
- Cleaning: Regularly clean the keyboard with a soft, dry cloth. For deeper cleaning, you can use compressed air to remove dust and debris from between the keycaps. For stubborn dirt, a slightly damp cloth with mild soap can be used, ensuring no liquid enters the keyboard.
- Keycap Removal: The keycaps can be carefully removed for cleaning or switch replacement using a keycap puller (not included). When reattaching, ensure they are aligned correctly and press gently until they click into place.
- Storage: Store the keyboard in a clean, dry environment away from direct sunlight and extreme temperatures.
- Avoid Spills: Liquid spills can severely damage the keyboard. In case of a spill, immediately disconnect the keyboard from your computer and allow it to dry completely before reconnecting.
Troubleshooting
If you encounter issues with your E-YOOSO K600 keyboard, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Keyboard not responding | Loose USB connection, faulty USB port, driver issue. |
|
| Backlight not working or incorrect mode | Backlight turned off, incorrect mode selected. |
|
| Keys not registering or ghosting | Software conflict, physical obstruction, damaged switch. |
|
If the problem persists after trying these solutions, please contact E-YOOSO customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | E-YOOSO |
| Model | K600 |
| Key Switch Type | Brown Mechanical Switches (OUTEMU) |
| Number of Keys | 104 |
| Keycap Type | Double-shot injection molding, Electroplating (Retro/Typewriter style) |
| Key Durability | Up to 50 million clicks |
| Backlighting | Rainbow LED, 9 modes, custom color setting |
| Anti-Ghosting | Full N-key Rollover |
| Connectivity | Wired USB (1.6m cable) |
| Compatible Devices | PC, Desktop, Laptop |
| Operating System Compatibility | Windows 11/10/8.1/8/7/XP/Vista, Limited Mac OS X, Linux, Chromebook |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
Warranty and Support
Warranty: The E-YOOSO K600 keyboard comes with a 30-day warranty from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or natural disasters.
Customer Support: For technical assistance, troubleshooting not covered in this manual, or warranty claims, please contact E-YOOSO customer support through the retailer where you purchased the product or visit the official E-YOOSO website for contact information. Please have your purchase receipt and product model number (K600) ready when contacting support.