Royal Kludge R75Pro Mechanical Keyboard

Fn blinks when the voltage is low.

Battery check

In Bluetooth or 2.4 Ghz mode, you can press and hold Fn + Enter to check the battery level (numeric keys light up to indicate percentage; e.g. 2 = 20%, 9 = 90%)

Development/Firmware Upgrade mode

This only works when you're connected using a USB cable.

There are two ways to enter into this mode:

Fn + Right Shift + Esc or press and hold the switch located under the Spacebar.

VIA drivers are https://usevia.app/

Secondary function keys

Fn + A Switch to Windows mode

Fn + S Switch to macOS mode

Fn + Del Scroll Lock

Fn + Home Print Screen

Fn + PgUp Pause

Fn + PgDn End

Fn + ] Ins

Backlight control

Note: The lights are in their full power when connected via USB

• Fn + Up Arrow Increase Backlight Brightness
• Fn + Down Arrow Decrease Backlight Brightness
• Fn + \ Switch Backlight Mode (including turning it off)
• Fn + Win Windows lock
• Fn + Left Arrow Decrease backlight speed
• Fn + Right Arrow Increase backlight speed
• Fn + , Switch Backlight Monochrome
• Fn + B Switch between six-key rollover and full-key rollover
• Fn + Spacebar Press and hold for three seconds to restore factory settings

Bluetooth Connectivity

Fn + Q/W/E change Bluetooth channel

Fn + Q/W/E enter Bluetooth pairing mode

2.4 Ghz Connectivity

Fn + P change 2.4 Ghz channel

Custom Backlight Set

Note: Fn + 2 ~ 3 Fixed lighting effect, not recording

Step 1: Fn + 1 customize backlight

Step 2: Fn + Backspace enter backlit recording mode

Step 3: Press the keys which you want to record the backlight, and repeat this step

Step 4: Fn + Backspace save and exit backlit recording mode

Multimedia Keys

Modifier key	Key	Windows mode	macOS mode
Fn	F1	Computer	Decrease screen brightness
	F2	Browser	Increase screen brightness
	F3	Mailbox
	F4	Calculator
	F5	Player	Decrease keyboard backlight brightness
	F6	Stop	Increase keyboard backlight brightness
	F7	Previous Track	Previous Track
	F8	Play / Pause	Play / Pause
	F9	Next Track	Next Track
	F10	Mute	Decrease screen brightness
	F11	Decrease volume	Decrease volume
	F12	Increase volume	Increase volume