Introduction
This manual provides detailed instructions for the Redragon K631 Castor 65% Wired RGB Gaming Keyboard. It covers essential information regarding setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device. The K631 Castor features a compact 65% layout with 68 keys, hot-swappable sockets, and vibrant RGB backlighting, designed for both gaming and general use.
Setup
The Redragon K631 Castor keyboard is designed for simple plug-and-play setup. Follow these steps to connect your keyboard:
- Unpack the Keyboard: Carefully remove the keyboard and all accessories from its packaging.
- Connect the USB Cable: Locate the USB-C port on the left side of the keyboard. Connect one end of the provided 2-in-1 wired cable (USB-C to USB-A/USB-C) to the keyboard.
- Connect to Computer: Plug the other end of the USB cable into an available USB port on your computer. The keyboard will automatically be detected and configured by your operating system.
- Positioning: Place the keyboard in a comfortable position on your desk. The compact 65% layout is ideal for saving desk space, especially for users who prefer more room for mouse movement during gaming.

The keyboard comes with a detachable USB cable, allowing for easy portability and replacement if needed. The included cable features both USB-A and USB-C connectors for broad compatibility.
Operating Instructions
RGB Backlighting
The K631 Castor features vibrant RGB backlighting with multiple preset modes. You can adjust the brightness and flowing speed directly on the keyboard. A music sync mode is also available for dynamic lighting effects.

Function Keys and Dedicated Arrow Keys
Despite its compact size, the 65% layout includes dedicated arrow keys and retains full functionality through FN key combinations. Refer to the keyboard's keycaps for specific FN layer functions (e.g., FN + HOME for Home, FN + END for End, FN + PRTSC for Print Screen, FN + INSERT for Insert).

Pro Software Support
For advanced customization, the Redragon K631 Castor supports professional software. This software allows you to:
- Design new backlighting modes and effects.
- Create macros with different keybindings.
- Reassign keys for more efficient work and gaming.
The software can be downloaded from the official Redragon website.

Maintenance
Hot-Swappable Switches
The Redragon K631 Castor features 100% hot-swappable sockets, making switch replacement and customization easy. This design is compatible with almost all 3-pin or 5-pin mechanical switches on the market.

Switch Replacement
To replace a switch:
- Remove Keycap: Use the included keycap puller to gently remove the keycap from the desired switch.
- Remove Switch: Use the included switch puller to carefully grip the switch and pull it straight up.
- Insert New Switch: Align the pins of the new switch with the holes in the PCB. Press down firmly until the switch clicks into place. Ensure the pins are not bent.
- Replace Keycap: Place the keycap back onto the new switch.
Regular cleaning of keycaps and the keyboard surface with a soft, dry cloth is recommended to maintain appearance and hygiene.
Troubleshooting
- Keyboard Not Responding: Ensure the USB cable is securely connected to both the keyboard and the computer. Try connecting to a different USB port.
- RGB Lights Not Working: Check the keyboard's manual or software for instructions on enabling and adjusting RGB lighting. Ensure no software conflicts are present.
- Keys Not Registering: If individual keys are not working, the switch may be faulty. Utilize the hot-swappable feature to replace the switch with a spare or new one.
- Software Issues: If experiencing problems with the customization software, ensure you have the latest version installed from the official Redragon website. Restart your computer after installation.
Specifications
| Feature | Detail |
|---|---|
| Brand | Redragon |
| Model Name | Castor |
| Model Number | K631 |
| Connectivity Technology | USB-C (Wired) |
| Keyboard Layout | 65% (68 Keys) |
| Switch Type | Linear (Red Mechanical Switches) |
| Actuation Force | 40g |
| Travel Distance | 2.0 mm |
| Click Lifespan | 50 Million |
| Hot-Swappable | Yes (99.8%+ switches compatible, 3/5-pin) |
| Backlighting | RGB (20+ preset modes, music sync) |
| Compatible Devices | Gaming Console, PC |
| Compatible OS | Windows |
| Product Dimensions | 13.58"L x 5.91"W x 1.97"H |
| Weight | Approx. 430g |
| Enclosure Material | Polycarbonate |
Warranty and Support
The Redragon K631 Castor keyboard comes with a 3-year warranty. For technical support, warranty claims, or any product-related inquiries, please contact Redragon customer service through their official website or the retailer where the product was purchased. Please retain your proof of purchase for warranty validation.





