The Key combinations table of Keychron K4
For the Keychron K4, we’ve included all the normal and useful function keys that can be accessed via the key combinations. Here is the table for all the key combinations and functions it can access.
fn + Keys
| Keys | Function |
|---|---|
| fn + 1 | Select Bluetooth device #1 |
| fn + 2 | Select Bluetooth device #2 |
| fn + 3 | Select Bluetooth device #3 |
| fn + 1 (long press for 3s) | Pair with Bluetooth device #1 |
| fn + 2 (long press for 3s) | Pair with Bluetooth device #2 |
| fn + 3 (long press for 3s) | Pair with Bluetooth device #3 |
| fn + Light Effect Key | Turn On / Off the Backlight |
| fn + Right Arrow (Only works for RGB-backlit version) | Change The Backlight Color |
| fn + Left Arrow (Only works for RGB-backlit version) | Change The Backlight Color |
| fn + F1 (Mac mode) | F1 |
| fn + F2 (Mac mode) | F2 |
| fn + F3 (Mac mode) | F3 |
| fn + F4 (Mac mode) | F4 |
| fn + F5 (Mac mode) | F5 |
| fn + F6 (Mac mode) | F6 |
| fn + F7 (Mac mode) | F7 |
| fn + F8 (Mac mode) | F8 |
| fn + F9 (Mac mode) | F9 |
| fn + F10 (Mac mode) | F10 |
| fn + F11 (Mac mode) | F11 |
| fn + F12 (Mac mode) | F12 |
| fn + F1 (Windows mode) | Screen Brightness Down |
| fn + F2 (Windows mode) | Screen Brightness Up |
| fn + F3 (Windows mode) | Launches Mission Control |
| fn + F4 (Windows mode) | Launchpad |
| fn + F5 (Windows mode) | Keyboard Backlight Down |
| fn + F6 (Windows mode) | Keyboard Backlight Up |
| fn + F7 (Windows mode) | Rewind |
| fn + F8 (Windows mode) | Play / Pause |
| fn + F9 (Windows mode) | Fast Forward |
| fn + F10 (Windows mode) | Sound: Volume Mute |
| fn + F11 (Windows mode) | Sound: Volume Down |
| fn + F12 (Windows mode) | Sound: Volume Up |
| fn + del | Insert |
More key combinations
| Keys | Function |
|---|---|
| fn + B | Check Battery (Still in Beta, not 100% accurate） RGB-Backlight Version Backlight Red = 0~30% Power Backlight Blue = 30%~70% Power Backlight Green = 70%~100% Power White-Backlight Version Two Rows Backlight off & the Other On = 0~30% Power One Row Backlight off & the Other On= 30%~70% Power All Backlight On = 70%~100% Power |
| fn+ L + Light Effect Key (long press for 3s) | Lock / Unlock the Backlight Effect |
| fn + S + O (Bluetooth mode, long press for 3s) | Disable / Enable the Auto Sleep Mode |
| fn + S + L + R (Bluetooth mode, long press for 3s) | Auto Sleep in 10 Minutes Without Typing |
| fn + S + L + T (Bluetooth mode, long press for 3s) | Auto Sleep in 20 Minutes Without Typing |
| fn + S + L + Y (Bluetooth mode, long press for 3s) | Auto Sleep in 30 Minutes Without Typing |
| fn + J + Z (long press for 3s) | Reset the Keyboard |
| fn + X + L (Windows mode, long press for 3s) | Switch Between Function Keys and Multimedia keys (F1-F12) |
| fn + K + C (Mac mode, long press for 3s) | Switch Between Function Keys and Multimedia Keys (Only works for F5 and F6) |
| fn + I + D (long press for 3s) | Switch Between the Delete Key and the Insert Key |