A4TECH FBX51C Bluetooth and 2.4G Wireless Keyboard User Guide

June 9, 2024
A4TECH

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A4TECH FBX51C Bluetooth and 2.4G Wireless Keyboard

A4TECH-FBX51C-Bluetooth-and-2.4G-Wireless-Keyboard-
product

WHAT’S IN THE BOX

A4TECH-FBX51C-Bluetooth-and-2 \(1\)

Overview

THE FRONT

A4TECH-FBX51C-Bluetooth-and-2 \(2\)

THE FLANK/BOTTOM

A4TECH-FBX51C-Bluetooth-and-2 \(3\)

CONNECTING 2.4G DEVICE

  1. Plug the receiver into the computer’s USB port.
  2. Turn on the keyboard power switch.
  3. The yellow light will be solid (10S). The light will be off after connected.

Note:
The USB extension cable is recommended to connect with the Nano receiver. (Make sure the keyboard is closed to the receiver within 30 cm).

CONNECTING BLUETOOTH

DEVICE 1 (For Mobile Phone/Tablet/Laptop)

  1. Short-press FN+7 and choose Bluetooth device 1 and light up in blue.
    Long-press FN+7 for 3S and blue light flashes slowly when pairing.

  2. Choose [A4 FBX51C] from your Bluetooth device.
    The indicator will be solid blue for a while then light off after the keyboard is connected.

DEVICE 2 (For Mobile Phone/Tablet/Laptop)

  1. Short-press FN+8 and choose Bluetooth device 2 and light up in green.
    Long-press FN+8 for 3S and the green light flashes slowly when pairing.

  2. Choose [A4 FBX51C] from your Bluetooth device.
    The indicator will be solid green for a while then light off after the keyboard is connected.

DEVICE 3 (For Mobile Phone/Tablet/Laptop)

  1. Short-press FN+9 and choose Bluetooth device 3 and light up in purple.
    Long-press FN+9 for 3S and a purple light flashes slowly when pairing.

  2. Choose [A4 FBX51C] from your Bluetooth device.
    The indicator will be solid purple for a while then light off after the keyboard is connected.

OPERATING SYSTEM SWAP

Windows/Android is the default system layout

A4TECH-FBX51C-Bluetooth-and-2 \(10\)

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

INDICATOR

(For Mobile Phone/Tablet/Laptop)

A4TECH-FBX51C-Bluetooth-and-2 \(11\)

FN MULTIMEDIA KEY COMBINATION SWITCH

FN Mode:
You can lock & unlock Fn mode by short-pressing FN + ESC by turn.

  1. Lock Fn Mode: No need to press the FN key
  2. Unlock Fn Mode: FN + ESC

After pairing, the FN shortcut is locked in FN mode by default, and the locking FN is memorized when switching and shutting down.A4TECH-FBX51C-
Bluetooth-and-2 \(13\)

OTHER FN SHORTCUTS SWITCH

A4TECH-FBX51C-Bluetooth-and-2 \(14\)

Note: The final function refers to the actual system.

DUAL-FUNCTION KEY

Multi-System Layout

A4TECH-FBX51C-Bluetooth-and-2 \(15\)

LOW BATTERY INDICATOR

A4TECH-FBX51C-Bluetooth-and-2 \(16\)

The flashing Red light indicates when the battery is below 10%.

USB TYPE-C RECHARGEABLE

Warning: Limit charge with 5V (Voltage).A4TECH-FBX51C-Bluetooth-and-2
\(17\)

Bulit-in 300mAh rechargeable lithium battery, it can be used for up to 3~5 months when fully charged.

  • Battery life may vary based on user and computing conditions.

SPECIFICATIONS

  • Model: FBX51C
  • Connection: Bluetooth / 2.4G
  • Operating Range: 5~10 M
  • Multi-Device: 4 Devices (Bluetooth x 3, 2.4G x 1)
  • Layout: Windows|Android|Mac|iOS
  • Battery: 300mAh Lithium Battery
  • Receiver: Nano USB Receiver
  • Includes: Keyboard, Nano Receiver, USB Extension Cable, Type-C Charging Cable, User Manual
  • System Requirements: Windows / Mac / iOS / Chrome / Android / Harmony OS.

Q & A

Question How to switch layouts under a different system?

Answer
You can switch layout by pressing Fn + I / O / P under Windows|Android|Mac|iOS.

Question Does the layout can be remembered?

Answer
The layout you used last time will be remembered.

Question How many devices can be connected?

Answer
Interchange and 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 devices 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 to 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, 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 a voltage exceeding 5V for charging.

Help

References

Read User Manual Online (PDF format)

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