Keychron K2 Max QMK Wireless Mechanical Keyboard

PRODUCT OVERVIEW

INSTALLATION

If you are a Windows user, please find the appropriate keycaps in the box, then follow the instructions below to find and replace the following keycaps.

1. Connect 2.4GHz Receiver
   Connect the 2.4GHz receiver to the device USB port.
   Switch toggle to 2.4GHz mode
   
2. Connect Bluetooth
   
   Switch toggle to Bluetooth
   
   Press fn + 1 (for 4 seconds) and pair with device named Keychron K2 Max.
   
3. Connect Cable
   
4. Switch To The Right System
   Please make sure the system toggle on the top left corner has been switched to the same system as your computer’s operating system.
   
5. The Backlight
   • Press fn + Q to change the lighting effect
     
   • Press fn + tab to turn the backlight on/off
     
6. Adjust The Backlight Brightness
   • Press fn + W to increase the backlight brightness
   • Press fn + S to decrease the backlight brightness
     
7. The Keychron Launcher App
   Please visit launcher.keychron.com to access the Keychron online launcher app. This app enables users to remap keys, adjust key actuation points, assign multiple commands to a single key, enter game controller mode, and more.
   If it cannot recognize your keyboard, please reach our support to get instruction.
   
   The online launcher App can only run on the latest version of Chrome, Edge, and Opera browsers yet. “The online launcher App only works when the keyboard is connected by wire to the computer.
8. The Layers
   • There are four layers of key settings on the keyboard. The layer O and layer 1 are for the Mac system. The layer 2 and layer 3 are for the Windows system.
     
   • If your system toggle is switched to Mac, then the layer O will be activated.
     
   • If your system toggle is switched to Windows, then the layer 2 will be activated. Remember that if you are using it in Windows mode, please make changes to the layer 2 instead of the top layer (the layer O).
     This is a common mistake people are making.
     
9. Factory Reset & Firmware Update
   
10. Warranty
    The keyboard is highly customizable and easy to be rebuilt. If anything goes wrong with any of the keyboard components of keyboard during the warranty period, we will only replace the defective parts of the keyboard, not the whole keyboard.

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 keyboard has been reset.

Flash your keyboard firmware

1. Visit launcher.keychron.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 the firmware update. “Step-by-step guide, search the keyword “firmware” on keychron.com.

Not Happy
support@keychron.com

Documents / Resources

Keychron K2 Max QMK Wireless Mechanical Keyboard [pdf] User Guide K2 Max QMK Wireless Mechanical Keyboard, K2 Max, QMK Wireless Mechanical Keyboard, Wireless Mechanical Keyboard, Mechanical Keyboard, Keyboard

References

• User Manual