A4TECH FBX55C Wireless Keyboard

What's in the Box

• Bluetooth/2.4G Wireless Keyboard
• 2.4G Nano Receiver
• USB Extension Cable
• USB Type-C Charging Cable
• USB Type-C Adaptor
• User Manual ?

The Front

Description of the keyboard layout and key areas:

• 1: 12 Multimedia & Internet Hotkeys
• 2: One-Touch 6 Hotkeys
• 3: Multi-Device Switch ?️
• 4: Operating System Swap ?
• 5: PC/MAC Dual-Function Keys ?️

[Diagram of keyboard layout with numbered callouts]

The Bottom

Power Switch: Located on the bottom of the keyboard. Slide to 'ON' or 'OFF'.

Type-C Charging Port: For charging the keyboard.

Magnetic Nano Receiver Storage: A slot to store the 2.4G Nano Receiver when not in use.

[Diagram showing the bottom of the keyboard with power switch and charging port]

Connecting Bluetooth Device 1 (For Mobile Phone/Tablet/Laptop)

1. Short-press FN + 7 to choose Bluetooth device 1. The indicator will light up in blue.
2. Long-press FN + 7 for 3 seconds. The blue light will flash slowly during pairing.
3. On your Bluetooth device, select "[FBX55C]" from the list of available devices.
4. The indicator light will be solid blue for a short period and then turn off after the keyboard is successfully connected.

[Diagram showing FN+7 keys and Bluetooth device selection screen]

Connecting Bluetooth Device 2 (For Mobile Phone/Tablet/Laptop)

1. Short-press FN + 8 to choose Bluetooth device 2. The indicator will light up in green.
2. Long-press FN + 8 for 3 seconds. The green light will flash slowly during pairing.
3. On your Bluetooth device, select "[FBX55C]" from the list of available devices.
4. The indicator light will be solid green for a short period and then turn off after the keyboard is successfully connected.

[Diagram showing FN+8 keys and Bluetooth device selection screen]

Connecting Bluetooth Device 3 (For Mobile Phone/Tablet/Laptop)

1. Short-press FN + 9 to choose Bluetooth device 3. The indicator will light up in purple.
2. Long-press FN + 9 for 3 seconds. The purple light will flash slowly during pairing.
3. On your Bluetooth device, select "[FBX55C]" from the list of available devices.
4. The indicator light will be solid purple for a short period and then turn off after the keyboard is successfully connected.

[Diagram showing FN+9 keys and Bluetooth device selection screen]

Connecting 2.4G Device

1. Plug the 2.4G Nano Receiver into a USB port on your computer.
2. Alternatively, use the USB Type-C adaptor to connect the Nano Receiver to a USB Type-C port on your computer.
3. Turn on the keyboard power switch. The indicator light will be solid yellow for 10 seconds and then turn off after the connection is established.

[Diagram showing receiver plugged into USB-A and USB-C ports, and power switch]

Operating System Swap ?

Note: The layout you used last time will be remembered. You can switch the layout by following the above step.

Indicator Lights (For Mobile Phone/Tablet/Laptop)

[Diagram showing different device connection states and indicator lights]

One-Touch 6 Hotkeys

• Office Application* ?
• AI Copilot* ?
• Screenshot Options ?
• Emoji Symbols ?
• Hide Application ❌
• Lock Computer ?

* Note: Supports Windows System Only

Revolutionary Anti-Ghosting

Note: Supports 2.4G Mode & Windows OS Only

Multi-key rollover ensures smooth typing and precise multi-key input, eliminating key conflicts for efficient workflows and competitive gameplay.

[Diagram showing keyboard with highlighted keys for different rollover types]

• * 5-Key Rollover
• * 5-Key Rollover
• * 9-Key Rollover
• * Multi-Key Rollover

Combination FN Keys

Other FN Shortcuts Switch

Note: The final function refers to the actual system.

Dual-Function Key (Multi-System Layout) ?

Note: The diagram shows the mapping for Ctrl, Alt, and Option keys.

Charging & Indicator ⚡

Warning: Limit charge with 5V (Voltage)

• Solid Red Light: Charging
• No Light: Fully Charged

Charging Time: Approximately 2.5 hours.

[Diagram showing USB-A to USB-C connection for charging]

A flashing red light indicates when the battery is below 15%.

Specifications

• Connection: Bluetooth / 2.4GHz
• Operating Range: 5~10 M
• Multi-Device: 4 Devices (Bluetooth x 3, 2.4G x 1)
• Character: Laser Engraving
• Report Rate: 1000 Hz (2.4G Mode), 125 Hz (Bluetooth Mode)
• Total Travel Distance: 2.0 mm
• Battery: 300mAh Lithium Battery
• Includes: Keyboard, Nano Receiver, Type-C Adaptor, USB Extension Cable, Type-C Charging Cable, User Manual
• System Platform: Windows / Mac

Q & A ❓

Question: How to switch layout under different system?

Answer: You can switch layout by pressing FN + O / P under Windows | Mac.

Question: Does the layout get remembered?

Answer: The layout you used last time will be remembered.

Question: How many devices can be connected?

Answer: You can connect up to 4 devices at the same time.

Question: Does the keyboard remember the connected device?

Answer: The device you connected last time will be remembered.

Question: How can I know the current device is connected or not?

Answer: When you turn on your device, the device indicator will be solid. (Disconnected: 5S, Connected: 10S)

Question: How to switch between connected Bluetooth device 1-3?

Answer: By pressing FN + Bluetooth shortcut (7 - 9).

Warning Statement ⚠️

The following actions may/will cause damages to the product:

1. To disassemble, bump, crush, or throw into the fire, you may cause irrefutable damages in event of the lithium battery leakage.
2. Do not expose under the strong sunlight.
3. Please obey all local laws when discarding the batteries; if possible, please recycle them. Do not dispose of it as household garbage, as it may cause a fire or an explosion.
4. Please try to avoid charging in an environment below 0°C.
5. Do not remove or replace the battery.
6. Please use the charging cable included in the package to charge the product.
7. Do not use any equipment with voltage exceeding 5V for charging.