R75Pro Mechanical Keyboard

Product Basics

Included in the Box

Royal Kludge R75Pro Mechanical Keyboard
USB Type-C Cable
2.4G Dongle
User Manual
Switch and Keycaps Puller

Specifications

Size	323(L) × 142.3(W) × 41.63(H) ±2 mm
Backlight	Monochrome/RGB
Version	USB / 2.4G / BT
Layout	80 keys
Switch	Mechanical switches

Indicator Lights & Knob Function

Indicator Lights

Caps Lock: Indicates when Caps Lock is active.

WIN Lock: Indicates when the Windows key is locked [cross].

Knob Function

The pluggable knob can be used as a media control or a key. It supports clockwise rotation, counter-clockwise rotation, and pressing.

Clockwise Rotation: Volume Up [volume-up]
Counter-Clockwise Rotation: Volume Down [volume-down]
Press: Mute [mute]

Charging Indicator

The indicator light is ON while charging and OFF when fully charged.

Connectivity

Wired Mode

Connect the keyboard using the provided USB Type-C cable.

BT Connectivity

1. Place the switch to the "B" side.

2. Short press [Fn] + [Q] / [W] / [E] to switch between Bluetooth channels.

3. Long press [Fn] + [Q] / [W] / [E] to enter pairing mode.

4. Turn on Bluetooth on your computer, phone, or other device, find and connect to "R75Pro".

2.4G Connectivity

1. Place the switch to the "G" side.

2. Short press [Fn] + [P] to switch between 2.4G channels.

3. If the [P] key flickers slowly, it indicates the dongle is successfully linked to the computer. (The receiver is factory paired and typically does not need re-pairing.)

Battery Reminder

Low Voltage: The [Fn] key blinks when the battery is low.

Battery Level Check: In BT or 2.4G mode, press and hold [Fn] + [Enter] to view the battery level indicator.

Battery Level Indicators:

Backlight is bright: 10% power remaining.
Backlight is on (both segments): 20% power remaining.
Backlight is on (all segments): 100% power remaining.

Custom Backlight Set

Recommendation: Use a 5V 1A rated power source for charging the keyboard.

Backlight Controls

Backlight Brightness Up: [Fn] + [→]
Backlight Brightness Down: [Fn] + [←]
Backlight Speed Up: [Fn] + [↑]
Backlight Speed Down: [Fn] + [↓]
Backlight Mode Switching: [Fn] + [ ]
Backlight Monochrome Switching: [Fn] + [ ]

Function Key Locks & Settings

Switch to Windows System: [Fn] + [A]
Switch to Mac System: [Fn] + [S]
Windows Lock: [Fn] + [Win] [cross]
Key Rollover: Switch between six-key rollover and full-key rollover using [Fn] + [ ]
Factory Reset: Press and hold for three seconds to restore factory settings.

Custom Backlight Recording

1. Press [Fn] + [C] for Cyan, [Fn] + [M] for Magenta, [Fn] + [Y] for Yellow, or [Fn] + [K] for Black to select a base color.

2. Press [key] to enter backlit recording mode.

3. Press the keys you want to record the backlight for.

4. When finished, press [key] again to save and exit the backlit recording mode.

Note: This feature supports fixed lighting effects and does not support recording custom dynamic effects.

Multimedia Keys

For Windows

System Switch: [Fn] + [A] switches to Windows system.

Function	Key Combination
Computer	[Fn] + [F1]
Browse	[Fn] + [F2]
Calculator	[Fn] + [F3]
Player	[Fn] + [F4]
Stop	[Fn] + [F5]
Previous Song	[Fn] + [F6]
Play/Pause	[Fn] + [F7]
Next Song	[Fn] + [F8]
Mute	[Fn] + [F9]
Volume Down	[Fn] + [F10]
Volume Up	[Fn] + [F11]
Mailbox	[Fn] + [F12]

For Mac

System Switch: [Fn] + [S] switches to Mac system.

Function	Key Combination
Brightness Down	[Fn] + [F1]
Brightness Up	[Fn] + [F2]
Screen Brightness Down	[Fn] + [F3]
Screen Brightness Up	[Fn] + [F4]
Mute	[Fn] + [F5]
Volume Down	[Fn] + [F6]
Play/Pause	[Fn] + [F7]
Next Song	[Fn] + [F8]
Previous Song	[Fn] + [F9]
Volume Up	[Fn] + [F10]
Mailbox	[Fn] + [F11]
Calculator	[Fn] + [F12]

DFU Mode

DFU (Device Firmware Upgrade) mode allows for firmware updates.

Methods to Enter DFU Mode:

Method 1: Press and hold the switch located under the spacebar, then connect the keyboard to the computer via USB.
Method 2: Connect the keyboard to the computer via USB first, then simultaneously short press [Fn] + [Right Shift] + [Esc].

These methods enable DFU mode for firmware upgrades and development functionalities.

The keyboard supports VIA drivers. You can find more information at: https://usevia.app/

Support

If you have any issues or questions regarding RK products, please contact us.

For prompt technical support, please email: rkgaming@rkgaming.com

Download drivers and find more information at: https://www.rkgaming.com/Download/1/

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