HUO JI CK621 75% Wireless Mechanical Gaming Keyboard User Manual

1. Introduction

Thank you for choosing the HUO JI CK621 75% Wireless Mechanical Gaming Keyboard. This manual provides detailed instructions for setting up, operating, and maintaining your keyboard to ensure optimal performance and longevity. Please read this manual thoroughly before using the product.

2. Package Contents

Upon unpacking, please verify that all items listed below are present and in good condition:

• HUO JI CK621 75% Wireless Mechanical Gaming Keyboard
• USB-A to USB-C Cable
• Keycap Puller
• Extra Switches
• User Manual (this document)

3. Product Features

The HUO JI CK621 keyboard is designed with advanced features for a superior user experience:

• Tri-mode Connection: Supports Bluetooth 5.0, 2.4GHz wireless, and USB wired connections. Connect up to five devices simultaneously and switch easily.
• Hot-swappable Switches: Features a hot-swappable base compatible with 3-pin or 5-pin switches, allowing for easy customization without soldering.
• Pre-lubed Linear Switches: Equipped with pre-lubricated switches and stabilizers for smooth typing and a pleasant sound.
• Gasket Structure & PCB Single Key Slotting: Advanced internal structure with an extended integrated silicone pad and PCB single key slotting for enhanced resilience, stability, and a softer, more elastic feel. Five layers of filling silencer reduce cavity noise.
• Side-Printed PBT Keycaps: Durable, fade-resistant, and sweat-proof PBT keycaps with side-engraved legends that allow RGB backlighting to shine through.
• Volume Knob: A multi-function knob to adjust volume (rotate) and play/pause media (click).
• RGB Backlighting: Customizable 16.8 million color RGB backlighting with multiple modes and effects.
• 75% Layout: Compact 81-key layout saves desktop space while retaining essential arrow keys.
• N-Key Rollover: Ensures all key presses are registered accurately, even during rapid typing or gaming.
• WIN Key Lock: Prevents accidental presses of the Windows key during intense gaming sessions.
• Long-lasting Battery: Integrated 4000mAh high-capacity battery for extended wireless use.
• Ergonomic Design: Features two-stage adjustable tilt stands for comfortable typing angles.

4. Setup Instructions

Follow these steps to connect your HUO JI CK621 keyboard:

4.1. Wired Mode

1. Locate the USB-C port on the keyboard (typically on the side or back).
2. Connect one end of the provided USB-A to USB-C cable to the keyboard.
3. Connect the other end of the cable to an available USB port on your computer.
4. The keyboard will be automatically recognized and ready for use.

4.2. 2.4GHz Wireless Mode

1. Locate the 2.4GHz USB receiver, usually stored in a compartment on the keyboard.
2. Plug the USB receiver into an available USB port on your computer.
3. Switch the connection mode selector on the keyboard to the 2.4G position.
4. The keyboard should connect automatically.

Image: The HUO JI CK621 keyboard demonstrating its versatile tri-mode connection capabilities, including wired, 2.4GHz, and Bluetooth, compatible with various devices like PCs, Macs, laptops, phones, and gaming consoles.

4.3. Bluetooth Mode

1. Switch the connection mode selector on the keyboard to the Bluetooth position.
2. On your device (PC, laptop, tablet, smartphone), go to Bluetooth settings.
3. The keyboard should appear as "HUO JI CK621" or similar in the list of available devices. Select it to pair.
4. If prompted, enter the pairing code displayed on your screen.
5. The keyboard can store up to three Bluetooth connections. Use specific key combinations (refer to your quick start guide or keyboard markings) to switch between paired devices.

5. Operating Instructions

5.1. Volume Knob Functionality

The multi-function knob located on the top right of the keyboard controls audio settings:

• Rotate Left: Decrease volume.
• Rotate Right: Increase volume.
• Press: Play or pause media, or mute/unmute audio.

Image: The multi-function knob on the HUO JI CK621 keyboard allows users to adjust volume by turning it left or right, and to play/pause or mute/unmute audio by pressing it.

5.2. RGB Backlighting Control

The keyboard features extensive RGB backlighting customization:

• FN + DEL: Switch between various RGB backlit modes.
• FN + F5/F6: Adjust backlighting brightness (F5 for decrease, F6 for increase).
• FN + </>: Adjust light speed (animation speed).
• FN + \|: Switch backlit color between red, green, blue, yellow, pink, cyan, white, and RGB in some modes.
• FN + Backspace: Turn off backlighting.

Image: The HUO JI CK621 keyboard showcasing its 16.8 million RGB backlighting, with key combinations for controlling lighting effects, brightness, and color.

5.3. Multimedia & Special Keyboard Functions

Utilize the FN key in combination with other keys for various functions:

6. Battery Management

The keyboard is equipped with a 4000mAh rechargeable Lithium Polymer battery.

• Charging: Connect the USB-A to USB-C cable to the keyboard and a power source (computer USB port or wall adapter). The charging indicator will show the charging status.
• Battery Life: Approximately 30 hours with backlighting ON, and up to 363 hours with backlighting OFF.
• Low Battery: When the battery is low, the indicator light will flash. Connect the charging cable promptly.

Image: The HUO JI CK621 keyboard highlights its 4000mAh high-capacity battery, providing approximately 30 hours of use with backlighting on and 363 hours with backlighting off.

7. Maintenance

To ensure the longevity and optimal performance of your keyboard, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to wipe the keyboard surface. For deeper cleaning, use the provided keycap puller to remove keycaps and clean underneath with compressed air or a small brush.
• Storage: Store the keyboard in a cool, dry place away from direct sunlight and extreme temperatures.
• Avoid Liquids: Do not expose the keyboard to liquids. In case of spills, immediately disconnect the keyboard and allow it to dry completely before re-connecting.
• Switch Replacement: When replacing switches, use the provided switch puller and ensure proper alignment to avoid damaging the hot-swappable sockets.

8. Troubleshooting

If you encounter any issues with your HUO JI CK621 keyboard, refer to the following common solutions:

• Keyboard not responding: Ensure the keyboard is charged. Check the connection mode (wired, 2.4G, Bluetooth) and ensure it matches your device's connection. For 2.4G, ensure the USB receiver is properly inserted. For Bluetooth, re-pair the device.
• Keys not registering: Clean under the keycaps. If a specific switch is faulty, use the keycap puller and extra switches to replace it.
• RGB backlighting not working: Ensure backlighting is not turned off (FN + Backspace). Adjust brightness (FN + F5/F6) or switch modes (FN + DEL).
• Intermittent wireless connection: Ensure the keyboard is within range of the receiver/Bluetooth device. Avoid interference from other wireless devices.
• System compatibility issues: Ensure the keyboard is set to the correct system mode (FN + W for Windows, FN + F12 for macOS).

If the issue persists, please contact customer support for further assistance.

9. Specifications

Detailed technical specifications for the HUO JI CK621 keyboard:

10. Official Product Video

Watch the official product video for a visual guide on the HUO JI CK621 Tri-Mode Mechanical Keyboard:

11. Warranty and Support

HUO JI products are manufactured to the highest quality standards. For warranty information, technical support, or customer service inquiries, please refer to the contact details provided on the product packaging or visit the official HUO JI website. Keep your purchase receipt as proof of purchase for warranty claims.