For the Keychron B3 Pro, 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.
Keychron B3 Pro Key Combinations
fn+keys
fn + \ (Mac mode)
Print Screen
fn + = (Windows mode)
Calculator
fn + \ (Windows mode)
Print Screen
fn + – (Windows mode)
BootLoader
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 + 4 (long press for 3s)
Pair with 2.4 GHz device
fn + Print Screen (Mac mode)
Print Screen
fn + F1 (Windows mode)
Screen Brightness Decrease
fn + F2 (Windows mode)
Screen Brightness Increase
fn + F3 (Windows mode)
Task View
fn + F4 (Windows mode)
File Explore
fn + F5 (Windows mode)
Search
fn + F6 (Windows mode)
Screen Lock in Windows
fn + F7 (Windows mode)
Previous
fn + F8 (Windows mode)
Play / Pause
fn + F9 (Windows mode)
Next
fn + F10 (Windows mode)
Mute
fn + F11 (Windows mode)
Volume Decrease
fn + F12 (Windows mode)
Volume Increase
fn + F13 (Windows mode)
Set
fn + Print Screen
Print Screen
fn + Right Shift
Open emoji
fn + Windows (Windows mode, long press for 3s)
Lock / Unlock the Win key
More Key Combinations
fn + B (long press)
Check Battery (Still in Beta, not 100% accurate) Power Indicator: Red = 0% – 30% Power
Power Indicator: Blue = 30% – 70% Power
Power Indicator: Green = 70% – 100% Power
fn + J + Z (long press for 3s)
Reset the Keyboard
fn + X + L (Windows mode, long press for 3s)
Switch Between the Function Keys and Multimedia Keys (F1–F12)
fn + X + L (Mac mode, long press for 3s)
Switch Between the Function Keys and Multimedia Keys (F1–F12)
