R99 Mechanical Keyboard

RK R99 Mechanical Keyboard Manual

The RK Royal Kludge R99 is a full-size mechanical keyboard featuring a 100% keyboard layout, mechanical switches, RGB backlighting, and three connection methods. It supports wired USB-C, Bluetooth, and 2.4 GHz wireless connections, allowing the keyboard to operate with compatible Windows and Mac computers and Bluetooth-enabled devices.

The keyboard includes a connection mode switch for selecting between wired, Bluetooth, and 2.4 GHz operation. Bluetooth mode supports pairing with up to three devices, with dedicated keyboard shortcuts for switching between saved connections.

The RK R99 features adjustable RGB lighting, side lighting effects, customizable key backlighting, and separate controls for brightness, lighting speed, color, and effect selection. Users can save personalized backlight settings directly through the keyboard.

The keyboard also provides function-key shortcuts for multimedia playback, volume adjustment, application access, operating system selection, and Windows key locking.

Its rechargeable battery includes a charging indicator and a keyboard-based battery level display. The number keys indicate battery charge in approximately 10% increments during Bluetooth and 2.4 GHz operation.

The RK R99 supports factory reset through a dedicated keyboard shortcut and provides access to the RK keyboard driver website for additional software.

Product Overview and Features

Technical Specifications

Keyboard Specifications

Keyboard Dimensions

The RK R99 measures:

• Length: 402 mm
• Width: 140 mm
• Height: 43 mm
• Tolerance: ±2 mm

Connection Specifications

RGB Lighting Features

The keyboard supports several lighting adjustments.

Some color and direction controls operate only when compatible lighting effects are active.

Parts and Components

The RK R99 includes a full-size mechanical keyboard layout with function keys, number keys, a numeric keypad, navigation keys, and dedicated status indicators.

Main Keyboard Components

Function Key Row

The F1–F12 keys provide multimedia and application shortcuts when used with Fn.

Their functions depend on whether the keyboard is set to Windows or Mac mode.

Fn Key

The Fn key activates secondary functions such as:

• Bluetooth pairing
• Wireless receiver pairing
• RGB lighting adjustments
• Multimedia controls
• Operating system switching
• Battery level display
• Factory reset

RGB Backlighting

The keyboard includes RGB backlighting that can be adjusted using dedicated shortcuts.

Side Lighting

The RK R99 provides side lighting controls for brightness, speed, direction, and effect selection.

USB Type-C Port

The USB Type-C port connects the keyboard to a compatible computer using a USB Type-C cable.

Connection Mode Switch

The keyboard’s mode switch selects the connection method.

Keyboard Indicator Lights

The RK R99 includes Num Lock, Caps Lock, and battery charging indicators.

Num Lock Indicator

The Num Lock indicator displays the status of the numeric keypad lock function.

Caps Lock Indicator

The Caps Lock indicator displays the status of Caps Lock.

Battery Charging Indicator

The keyboard uses a red indicator light to display charging and low-battery conditions.

Important: The RK R99 does not support fast charging.

Before First Use

Before operating the RK R99, select the required connection method and prepare the compatible device.

The keyboard supports wired USB-C, Bluetooth, and 2.4 GHz wireless operation.

For Bluetooth connections, the keyboard must be paired with the device before wireless typing can begin.

For 2.4 GHz operation, the keyboard uses its wireless receiver.

Initial Setup

1. Place the keyboard on a suitable, stable surface.
2. Select the required connection mode.
3. Connect the USB Type-C cable, enable Bluetooth pairing, or connect the 2.4 GHz receiver.
4. Complete the connection procedure for the selected mode.
5. Select Windows or Mac mode using the appropriate shortcut.
6. Adjust the RGB lighting if required.

Wired USB-C Connection

The RK R99 supports direct wired operation through USB Type-C.

How to Connect the RK R99 in Wired Mode

1. Move the keyboard’s connection switch to the center position.
2. Connect the product’s USB Type-C cable to the keyboard’s Type-C port.
3. Connect the other end to the compatible computer.
4. Use the keyboard in wired mode.

The switch must remain in the center position for wired operation.

Bluetooth Connection

The RK R99 supports Bluetooth connections with up to three devices.

The keyboard uses the Fn + Q, Fn + W, and Fn + E shortcuts for pairing and switching between saved Bluetooth connections.

How to Pair the RK R99 Using Bluetooth

1. Move the keyboard’s connection switch to B.
2. Select a Bluetooth device slot using Fn + Q, Fn + W, or Fn + E.
3. Press and hold the selected combination to enter pairing mode. For example, hold Fn + Q.
4. The selected letter key begins flashing rapidly to indicate Bluetooth pairing mode.
5. Enable Bluetooth on the computer, tablet, or other compatible device.
6. Search for available Bluetooth devices.
7. Select RK R99 from the available device list.
8. Complete the connection.

Bluetooth Pairing Indicators

Bluetooth Device Slots

Connecting Three Bluetooth Devices

The keyboard can store three different Bluetooth device connections.

To configure additional devices:

1. Keep the connection switch in Bluetooth mode.
2. Hold Fn + W to pair a second device.
3. Enable Bluetooth on the second device and select RK R99.
4. Hold Fn + E to pair a third device.
5. Complete pairing on the third device.

Switching Between Bluetooth Devices

After the devices have been paired, briefly press:

• Fn + Q to select the first device.
• Fn + W to select the second device.
• Fn + E to select the third device.

A short press switches between saved devices, while a long press starts the pairing process.

2.4 GHz Wireless Connection

The RK R99 supports wireless operation using a 2.4 GHz receiver.

The keyboard and receiver are paired at the factory.

How to Connect the RK R99 Using 2.4 GHz

1. Move the keyboard’s connection switch to G.
2. Connect the 2.4 GHz receiver to the compatible computer.
3. Use the keyboard with the receiver.

How to Pair the 2.4 GHz Receiver

If pairing is required:

1. Move the connection switch to G.
2. Press and hold Fn + P.
3. Insert the wireless receiver into the computer.
4. The P key flashes rapidly during pairing.
5. Wait until the P key stops flashing.

When the P key stops flashing, pairing has succeeded.

2.4 GHz Pairing Indicator

The keyboard and receiver normally do not require pairing again after leaving the factory.

Switching Between Connection Modes

The physical connection switch selects the keyboard’s operating mode.

Bluetooth device switching is handled separately using Fn + Q, Fn + W, and Fn + E.

Checking the Keyboard Battery Level

The RK R99 provides a battery level indicator through the number keys.

This function operates in Bluetooth and 2.4 GHz modes.

How to Check Battery Percentage

1. Set the keyboard to Bluetooth or 2.4 GHz mode.
2. Press and hold Fn + Enter.
3. Observe the illuminated number keys.

The number keys indicate the battery level in approximately 10% increments.

Battery Level Indicator Guide

When the backlighting illuminates simultaneously from 1 through 0, the keyboard battery is fully charged.

Charging the RK R99 Keyboard

The RK R99 has a rechargeable battery and a red charging indicator.

Charging Indicator Behavior

• A solid red indicator means the keyboard is charging.
• The indicator turns off after the battery is fully charged.
• A flashing red indicator means the battery charge is low.

Do not use fast charging. The keyboard does not support fast charging.

RGB Backlight Controls

The RK R99 includes keyboard RGB backlighting with adjustable brightness, speed, color, and lighting modes.

Main Backlight Shortcuts

Backlight color switching operates with applicable lighting effects.

Adjusting Backlight Brightness

Press Fn + Up Arrow to increase the brightness.

Press Fn + Down Arrow to decrease the brightness.

Adjusting Backlight Speed

Press Fn + Left Arrow to decrease the lighting effect speed.

Press Fn + Right Arrow to increase the lighting effect speed.

Changing Backlight Color

Press Fn + , / < to change the backlight color when a compatible lighting effect is active.

Switching RGB Lighting Modes

Press Fn + \ / | to switch between backlight modes.

Turning the Keyboard Lights On or Off

Press Fn + Esc.

This shortcut switches the keyboard lighting on or off.

Side Lighting Controls

The RK R99 includes separate controls for side lighting.

Side Light Shortcut Guide

The side lighting direction and monochrome controls are available with compatible lighting effects.

Increasing Side Light Brightness

Press Fn with the equal/plus key.

Decreasing Side Light Brightness

Press Fn with the minus/underscore key.

Adjusting Side Light Speed

Use Fn + Num – or Fn + Num +.

Changing Side Lighting Direction

Use the corresponding bracket-key shortcuts to change the side light direction.

Changing Side Lighting Modes

Press Fn with the period/greater-than key.

Customizing the RK R99 RGB Backlighting

The keyboard supports custom backlight recording.

Custom lighting allows selected keys to be included in a personalized lighting configuration.

How to Set Custom Backlighting

1. Press Fn + 1 to select the customizable backlight setting.
2. Press Fn + Back to enter backlight recording mode.
3. The keyboard backlighting turns off to indicate that recording has started.
4. Press the keys that should be customized.
5. Repeat the key selection process as required.
6. Press Fn + Back again to save the settings and exit recording mode.

Fixed Lighting Effects

The manual identifies Fn + 2 and Fn + 3 as fixed lighting effects.

These effects are not used for custom lighting recording.

Windows and Mac Operating System Modes

The RK R99 supports Windows and Mac keyboard modes.

Use the appropriate operating system mode to access the corresponding multimedia and function-key behavior.

Switching to Windows Mode

Press Fn + A.

Switching to Mac Mode

Press Fn + S.

Operating System Mode Shortcuts

Windows Multimedia Keyboard Shortcuts

In Windows mode, Fn + F1 through Fn + F12 provide application and multimedia functions.

Windows Shortcut Guide

Opening the Browser

Press Fn + F2 in Windows mode.

Opening the Calculator

Press Fn + F4.

Controlling Media Playback

Adjusting Audio Volume

Use Fn + F10 to mute, Fn + F11 to reduce volume, or Fn + F12 to increase volume.

Mac Multimedia Keyboard Shortcuts

In Mac mode, the keyboard provides shortcuts for screen brightness, search, keyboard lighting, audio, and multimedia playback.

Mac Shortcut Guide

Adjusting Screen Brightness on Mac

Press Fn + F1 to decrease screen brightness.

Press Fn + F2 to increase it.

Adjusting Keyboard Brightness on Mac

Press Fn + F5 to decrease the keyboard backlight brightness.

Press Fn + F6 to increase it.

Mac Media Playback

Use Fn + F7, Fn + F8, and Fn + F9 to control previous track, play/pause, and next track functions.

Additional Keyboard Function Shortcuts

The RK R99 includes secondary shortcuts for pause, system switching, Windows locking, and factory reset.

Locking the Windows Key

The RK R99 includes a Windows key lock function.

How to Lock the Windows Key

Press Fn + Win.

Restoring Factory Settings

The keyboard includes a factory reset function.

How to Reset the RK R99

1. Press and hold Fn + Spacebar.
2. Keep both keys pressed for three seconds.
3. Allow the keyboard to restore its factory settings.

Keyboard Driver and Software

The manual provides a keyboard shortcut for opening the RK driver website.

Opening the Driver URL

Press Fn + Right Shift.

The driver website is:

https://drive.rkgaming.com

Troubleshooting Guide

The following checks use the keyboard’s connection procedures, indicator behavior, and reset functions.

Common Problems and Solutions

Bluetooth Keyboard Not Connecting

1. Move the mode switch to B.
2. Hold Fn + Q, Fn + W, or Fn + E.
3. Check whether the selected letter key flashes rapidly.
4. Enable Bluetooth on the computer or other device.
5. Search for RK R99.
6. Select the keyboard and complete pairing.

Bluetooth Pairing Indicator Flashes Slowly

A slowly flashing Bluetooth slot key indicates linking.

A rapidly flashing key indicates pairing mode.

2.4 GHz Keyboard Not Connecting

1. Move the connection switch to G.
2. Connect the wireless receiver.
3. If pairing is required, press and hold Fn + P.
4. Wait for the P key to flash rapidly.
5. Allow the pairing process to finish.

The connection is successful when P stops flashing.

Wired Mode Not Working

1. Move the connection switch to the center.
2. Connect the USB Type-C cable to the keyboard.
3. Connect the other end to the computer.

Keyboard Backlight Is Off

Press Fn + Esc to turn the lighting on.

RGB Lighting Does Not Change Color

Some lighting modes do not support the same color adjustments.

Select a compatible lighting effect before using the color switching shortcut.

Custom Backlight Settings Are Not Saved

To save a custom backlight configuration, press Fn + Back again after selecting the desired keys.

This saves the settings and exits the recording mode.

Keyboard Battery Indicator Flashes Red

A flashing red charging indicator means the battery is low.

Windows Shortcuts Behave Differently

Press Fn + A to select Windows mode.

Mac Shortcuts Behave Differently

Press Fn + S to select Mac mode.

Restoring Keyboard Settings

Hold Fn + Spacebar for three seconds to restore factory settings.

Keyboard Care and Maintenance

Regular maintenance helps keep the RK R99 comfortable to use and protects its mechanical keys.

Keyboard Handling

• Maintain proper posture during use.
• Avoid pressing the keys with excessive force.
• Take regular breaks to reduce hand fatigue.
• Clean the keyboard regularly to remove dust and dirt.
• Keep liquids away from the keyboard.

Storage and Operating Precautions

The RK R99 should be kept in a suitable environment.

Avoid exposing the keyboard to:

• Extreme temperatures
• Excessive humidity
• Liquids
• Excessive heat

Battery Safety

The rechargeable battery must not be exposed to excessive heat, including prolonged direct sunlight or fire.

Do not:

• Replace the battery with an incorrect type.
• Throw the battery into fire or a hot oven.
• Crush or cut the battery mechanically.
• Leave it in an extremely hot environment.
• Expose it to extremely low air pressure.

These conditions may cause explosion or leakage of flammable liquid or gas.

Regulatory Information

FCC Compliance

The RK R99 is described as complying with Part 15 of the FCC Rules.

Operation is subject to two conditions:

1. The device must not cause harmful interference.
2. The device must accept received interference, including interference that may cause undesired operation.

The equipment has been tested against Class B digital device limits.

Reducing Radio Interference

If the keyboard causes interference with nearby radio or television reception, the manual recommends:

• Reorienting or relocating the receiving antenna.
• Increasing the separation between the equipment and receiver.
• Connecting the equipment to an outlet on a different circuit.
• Consulting the dealer or an experienced radio/TV technician.

Canadian ISED Compliance

The keyboard includes radio equipment described as complying with applicable Innovation, Science and Economic Development Canada licence-exempt RSS requirements.

Unauthorized Modifications

Changes or modifications not expressly approved by the responsible compliance party may void authorization to operate the device.

Customer Support Information

Frequently Asked Questions

1. How do I connect the Royal Kludge R99 using Bluetooth?

Move the connection switch to B, then press and hold Fn + Q, Fn + W, or Fn + E to enter Bluetooth pairing mode. The selected letter key flashes rapidly. Enable Bluetooth on the computer or other device, search for RK R99, and complete the connection.

2. How do I switch between three Bluetooth devices on the RK R99?

The RK R99 stores three Bluetooth connections using Fn + Q, Fn + W, and Fn + E. After pairing the devices, briefly press the corresponding shortcut to switch to the saved Bluetooth connection.

3. How do I connect the RK R99 using the 2.4 GHz receiver?

Move the connection switch to G and connect the wireless receiver to the computer. The receiver is normally paired at the factory. If pairing is needed, hold Fn + P and connect the receiver. The P key flashes during pairing and stops flashing when pairing succeeds.

4. How do I connect the RK R99 in wired mode?

Move the mode switch to the center position. Connect the USB Type-C cable to the keyboard and then to the computer. The keyboard operates in wired mode.

5. How do I change the RGB lighting on the RK R99?

Use Fn + Up or Down Arrow to change brightness, Fn + Left or Right Arrow to change effect speed, and the dedicated Fn lighting shortcuts to change colors or lighting modes. Press Fn + Esc to turn the lights on or off.

6. How do I check the battery percentage on the RK R99?

In Bluetooth or 2.4 GHz mode, hold Fn + Enter. The number keys indicate the battery level from 10% to 100%. When keys 1 through 0 illuminate simultaneously, the battery is fully charged.

7. How do I switch the RK R99 between Windows and Mac modes?

Press Fn + A to select Windows mode or Fn + S to select Mac mode. Each mode provides its corresponding function-key and multimedia shortcuts.

8. How do I factory reset the RK R99 keyboard?

Press and hold Fn + Spacebar for three seconds. This restores the keyboard’s factory settings.