Keychron L4 Wireless Custom Gaming Keyboard

Connect 2.4 GHz Receiver

Note: For the best wireless experience, we recommend using the extension adapter for receiver and putting the 2.4GHz receiver somewhere on your desk close to your keyboard for a low rate of latency and fewer signal interferences.

Connect Bluetooth

Connect Cable

The Lemokey Launcher Ap

Please visit launcher.lemokey.com to use the online Launcher web app to remap the keys, create macro commands, or flash the firmware. If the Launcher cannot recognize your keyboard, please reach our support to get the instructions.

• *The online Launcher can only run on the latest version of Chrome, Edge, and Opera browsers.
• ‘The Launcher only works when the keyboard is connected by wire to the computer.

Switch to Mac

• Please find the Mac keycaps in the box, and follow the instructions below to find and replace the following keycaps.
• Use the online launcher app to remap the Windows keys to Mac keys.

The Backlight

• Press Fn + Q to change the lighting effect
• Press Fn + Tab to turn the backlight on/off

Adjust The Backlight Brightness

• Press Fn + W to increase the backlight brightness
• Press Fn + S to decrease the backlight brightness

Adjust The Backlight Speed

• Press Fn + T to increase the light effect speed
• Press Fn + G to decrease the light effect speed

The Key Rollove

• 6-key rollover: the keyboard can detect up to 6 simultaneous key inputs. N-key rollover: the keyboard can detect all key inputs without limit to the number of key presses.
• The keyboard turns on the 6-key rollover by default.

Factory Reset & Firmware Update

Troubleshooting?
Don’t know what’s going on with the keyboard? Factory reset your keyboard

1. Power on your keyboard.
2. Press and hold fn + J + Z (for 4 seconds). The keyboard backlight will flash in red quickly for 3 seconds, indicating that the keFlash your keyboard firmware yboard has been reset.

Flash your keyboard firmware

1. Visit launcher.lemokey.com to open the online Launcher web app.
2. Ensure the keyboard is in Cable or Wired mode and plug in the power cable.
3. Find the ‘Firmware Update’ tab on the left side of the Launcher and connect your keyboard with it.
4. Follow the instructions on the Launcher and complete thefirmware update.

Step-by-step guide, search the keyword “firmware” on lemokey.com.

Documents / Resources

Keychron L4 Wireless Custom Gaming Keyboard [pdf] User Guide L4 Wireless Custom Gaming Keyboard, L4, Wireless Custom Gaming Keyboard, Custom Gaming Keyboard, Gaming Keyboard, Keyboard

References

• User Manual