Keychron K3 Ultra-Slim Wireless Mechanical Keyboard User Guide

June 4, 2024
Keychron

Keychron K3 Ultra-Slim Wireless Mechanical Keyboard

Connect Bluetooth

Connect Cable


Switch toggle to Cable

Press fn + 1 (for 4 seconds) and pair with device named Keychron K3

Change Light effect

Press light effect key

For RGB version – Press fn + right arrow/ left arrow to change colo

Switch between function and multimedia keys (F1- F12)

For Windows: Press fn + X + L (for 4 seconds) to switch


Disable Auto Sleep Mode

The keyboard goes to Auto Sleep Mode in 10 minutes of sitting idle to save battery

Press fn + S + O (for 4 seconds) to disable the Auto Sleep Mode.
(If you want to go back to the Auto Sleep mode, press fn + S + O for  4 second 5 again)

Remap keys

We don’t have an official software to remap the keys yet.
But you can use these two software to get the job done.
(Except the light effect key)

Linux’s Setting

We have a Linux user group on facebook. Please search uKeychron Linux Group” on facebook. So you can better experience with our keyboard.

Turn Off the Backlight

If you are on the Mac, the default is to press FS key.
If you are on the Windows, the default is to press fn + FS key.

Or press the fn + light effect key.

Factory Reset

Trouble shooting? Don’t know what’s going on with the keyboard?
Try factory reset by pressing fn +J +Z (for 4 seconds)

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