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 for Windows

Note: Fn + A switch to Windows mode first

• Fn + F1 Computer
• Fn + F2 Browser
• Fn + F3 Mailbox
• Fn + F4 Calculator
• Fn + F5 Player
• Fn + F6 Stop
• Fn + F7 Last Song
• Fn + F8 Play / Pause
• Fn + F9 Next Song
• Fn + F10 Mute
• Fn + F11 Decrease volume
• Fn + F12 Increase volume

Multimedia Keys for Mac

Note: Fn + S switch to Mac mode first

• Fn + F1 Decrease screen brightness
• Fn + F2 Increase screen brightness
• Fn + F5 Decrease keyboard backlight brightness
• Fn + F6 Increase keyboard backlight brightness
• Fn + F7 Last Song
• Fn + F8 Play / Pause
• Fn + F9 Next Song
• Fn + F10 Mute
• Fn + F11 Decrease volume
• Fn + F12 Increase volume