1. Introduction
Welcome to the user manual for your new LS K68 Tri-Mode Mechanical Keyboard. This keyboard is designed for versatility and performance, featuring a compact 75% layout with 68 keys, vibrant RGB backlighting, and three connectivity options: 2.4G wireless, Bluetooth, and wired USB-C. Its ergonomic design and premium mechanical switches provide a comfortable and responsive typing experience for both gaming and productivity.
Video: Overview of the K68 Tri-Mode Mechanical Keyboard, showcasing its features and included accessories.
2. Package Contents
Please check the package for the following items:
- LS K68 Mechanical Keyboard
- USB-C to USB-A Cable
- 2.4G USB Receiver (often stored in the keyboard's hidden compartment)
- Keycap Puller
- Switch Puller
- User Manual (this document)
- Optional: Decorative Ribbon (for customization)

Image: The K68 keyboard in white, alongside its USB-C cable, 2.4G receiver, keycap puller, switch puller, and manual.
3. Specifications
| Feature | Detail |
|---|---|
| Model | K68 |
| Layout | 75% (68 Keys) |
| Connectivity | 2.4G Wireless, Bluetooth, Wired (USB-C) |
| Operation Style | Mechanical |
| Backlight | RGB (18 Colorful Rhythm Modes) |
| Keycap Material | ABS Plastic |
| Keycap Printing | Side Carving |
| Battery Capacity | 4000mAh |
| Ergonomics | Approx. 18.8mm low front height, Dual-section adjustable kickstand |
| Compatibility | Desktop, Laptop (Multi-system support) |
| Package Dimensions (L x W x H) | 11 x 11 x 11 cm |
| Package Weight | 0.75 kg |
| Certifications | CE, FCC, RoHS |
4. Initial Setup
4.1 Charging the Keyboard
Before first use, it is recommended to fully charge the keyboard. Connect the provided USB-C cable to the keyboard's USB-C port and the other end to a power source (e.g., computer USB port, USB wall adapter). The keyboard features a 4000mAh battery for long-lasting endurance.

Image: Visual representation of the K68 keyboard's 4000mAh battery capacity.
4.2 Connecting the Keyboard
The K68 keyboard supports three connection modes: Wired, 2.4G Wireless, and Bluetooth. A switch located on the back of the keyboard allows you to select your preferred mode.

Image: Close-up of the K68 keyboard's rear, showing the mode switch (BT, 2.4G) and USB-C port.
4.2.1 Wired Connection
- Ensure the mode switch on the back of the keyboard is set to the "Wired" position (usually indicated by the absence of BT/2.4G labels or a specific wired icon).
- Connect the provided USB-C cable to the keyboard's USB-C port.
- Connect the other end of the USB-A cable to an available USB port on your computer.
- The keyboard will be automatically recognized and ready for use.
4.2.2 2.4G Wireless Connection
- Locate the 2.4G USB receiver. It might be stored in a hidden compartment on the keyboard itself.
- Plug the 2.4G USB receiver into an available USB port on your computer.
- Set the mode switch on the back of the keyboard to "2.4G".
- The keyboard should connect automatically. If not, press and hold the Fn key + R (or a designated pairing key) for a few seconds until the indicator light flashes, then release.
4.2.3 Bluetooth Connection
- Set the mode switch on the back of the keyboard to "BT".
- On your device (computer, tablet, phone), go to Bluetooth settings and enable Bluetooth.
- On the keyboard, press and hold the Fn key + Q/W/E (or designated Bluetooth pairing keys) for a few seconds to enter pairing mode. The indicator light will flash rapidly.
- On your device, select "K68" (or similar name) from the list of available Bluetooth devices to pair.
- Once paired, the indicator light on the keyboard will stop flashing and remain solid.
- You can pair up to three Bluetooth devices (e.g., Fn+Q for device 1, Fn+W for device 2, Fn+E for device 3) and switch between them by pressing Fn + Q/W/E.

Image: The K68 keyboard demonstrating its 3-mode connection capability with various devices like laptops, tablets, and smartphones.
4.3 Adjusting Keyboard Angle
The K68 features a dual-section adjustable kickstand and non-slip mats for ergonomic comfort. You can adjust the keyboard's angle to your preference to reduce wrist strain during long typing or gaming sessions.

Image: The K68 keyboard in pink, illustrating its ergonomic angle with the kickstand extended.
5. Operating Instructions
5.1 RGB Backlighting
The K68 keyboard features 18 colorful rhythm modes for personalized desktop scenery. You can switch between these modes and customize lighting effects using the keyboard's function keys or dedicated driver software.
- Switching Modes: Use Fn + [specific key, usually indicated by a light bulb icon or arrow keys] to cycle through the 18 lighting effects.
- Brightness/Speed Adjustment: Use Fn + Up/Down arrow keys for brightness, and Fn + Left/Right arrow keys for speed of dynamic effects.
- Music Rhythm Visualization: The keyboard supports music rhythm visualization, where lighting effects react to audio input. This can be configured via the driver software.

Image: Two K68 keyboards, one pink and one black, showcasing different colorful RGB lighting modes.
5.2 Key Remapping and Customization
The K68 allows you to reconfigure keys and customize lighting effects according to your personal preferences using its fully self-developed driver software (M HUB). This enables a richer gameplay experience and personalized desktop trend matching.
- Driver Installation: Download and install the official driver software from the manufacturer's website.
- Key Assignment: Use the software to reassign functions to individual keys.
- Macro Recording: Create and assign macros for complex commands.
- Lighting Customization: Fine-tune RGB effects, colors, and patterns beyond the onboard presets.

Image: A K68 keyboard alongside a screen showing the driver software interface for reconfiguring keys and customizing lighting.
5.3 Hot-Swappable Switches
The K68 features hot-swappable switches, allowing you to easily change mechanical switches without soldering. This provides flexibility for customizing your typing feel and extending the keyboard's lifespan.
- Remove Keycap: Use the provided keycap puller to gently remove the desired keycap.
- Remove Switch: Use the provided switch puller to carefully grip and pull out the mechanical switch.
- Insert New Switch: Align the pins of the new switch with the holes on the PCB and press firmly until it clicks into place. Ensure pins are not bent.
- Replace Keycap: Place the keycap back onto the new switch.

Image: A detailed view of the K68's hot-swappable switch design, highlighting the precision-tuned axle and satellite axis.
6. Maintenance
To ensure the longevity and optimal performance of your K68 keyboard, follow these maintenance guidelines:
- Cleaning Keycaps: Use the provided keycap puller to remove keycaps. Clean them with a soft cloth dampened with mild soap and water. Ensure they are completely dry before reattaching.
- Cleaning the Keyboard Body: Use a soft, dry, lint-free cloth to wipe down the keyboard body. For stubborn dirt, a slightly damp cloth can be used, but avoid excessive moisture.
- Removing Debris: Use compressed air to blow out dust and debris from between the keys.
- Avoid Liquids: Do not spill liquids on the keyboard. If a spill occurs, immediately disconnect the keyboard, turn it upside down to drain, and allow it to dry completely before reconnecting.
- Storage: Store the keyboard in a cool, dry place away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you encounter any issues with your K68 keyboard, please refer to the following common solutions:
- Keyboard not responding (Wired):
- Ensure the USB-C cable is securely connected to both the keyboard and the computer.
- Try a different USB port on your computer.
- Ensure the mode switch on the keyboard is set to "Wired".
- Test with a different USB-C cable if available.
- Keyboard not responding (2.4G Wireless):
- Ensure the 2.4G USB receiver is securely plugged into a USB port.
- Ensure the mode switch on the keyboard is set to "2.4G".
- Re-pair the keyboard by pressing Fn + R (or designated pairing key) until the indicator flashes, then release.
- Check battery level; charge if low.
- Keyboard not responding (Bluetooth):
- Ensure the mode switch on the keyboard is set to "BT".
- Ensure Bluetooth is enabled on your device.
- Forget the device in your device's Bluetooth settings and re-pair (Fn + Q/W/E).
- Check battery level; charge if low.
- Ensure you are within the effective Bluetooth range.
- RGB lighting not working or stuck:
- Try cycling through lighting modes using Fn + [light bulb key].
- Adjust brightness using Fn + Up/Down arrow keys.
- If using driver software, ensure it's updated and correctly configured.
- Perform a factory reset (refer to the specific key combination in the quick start guide if provided, typically Fn + Esc for a few seconds).
- Keys not registering or double-typing:
- Clean around the affected key with compressed air.
- If hot-swappable, try removing and re-inserting the switch.
- Consider replacing the switch if the issue persists.
8. User Tips
No specific user tips were available from reviews or Q&A for this product. However, general tips for mechanical keyboard users include:
- Experiment with different RGB lighting modes to find your preferred aesthetic.
- Utilize the customizable key remapping feature via the driver software to optimize your workflow or gaming setup.
- Take advantage of the hot-swappable switches to try different switch types without needing a new keyboard.
- Regularly clean your keyboard to prevent dust and debris from affecting performance.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the seller's official website or contact their customer service directly. Keep your proof of purchase for any warranty claims.




