USB-BT540
Bluetooth 5.4 USB Adapter
  • Latest Bluetooth 5.4 with Bluetooth Low Energy (BLE) for energy-saving wireless connectivity*
  • Up to 7 devices connection to engage all your Bluetooth devices in a single gadget
  • Ultra-small design for unmatched portability

*LE Audio is available only if supported by the OS.

USB-BT540
A user is plugging the USB-BT540 into the laptop to show easy connection.
  • Earphones
  • keyboard
  • mouse
  • game controller
  • smartphones
  • tablet

A user is plugging the USB-BT540 into the laptop to show easy connection.

Two people are playing video games with all their wireless devices connected with the laptop through the USB-BT540.

Two people are playing video games with all their wireless devices connected with the laptop through the USB-BT540.

Your ultimate solution for wireless connectivity

The USB-BT540 features the latest Bluetooth 5.4 technology, allowing you to connect up to 7 Bluetooth smart devices simultaneously. Enjoy faster connections, connect more devices, and extend your range like never before!
A woman is listening to the music with her wireless headphones which is connected to the laptop via the USB-BT540. There is also a table indicating the comparison between SBC and LC3 codec.
a table indicating the comparison between SBC and LC3 codec, showing the superiority and advantages of LC3.
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High quality, Unparalleled Efficiency

The USB-BT540 features LC3 codec, allowing listeners to enjoy a more energy-efficient and high-quality audio experience, while significantly reducing device power consumption by about 50%.

Farther, faster!

Compared to adapters using Bluetooth 4.X, the USB-BT540 significantly boosts data transfer speed and range.
  • icon showing speed capability.

    Data transfer speed

    2X

  • icon showing transfer range.

    Data transfer range

    4X

  • Bluetooth 4.X

    Bluetooth 5.4

Always ready to connect

The USB-BT540 features a sleek, compact design that enhances your device's Bluetooth capabilities while maintaining aesthetics and portability.
A picture visualizing instanct connection of the USB-BT540 for picture, music, video transfer with the dimension of the product showing on the right below.
  • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
  • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
  • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
  • PCB color and bundled software versions are subject to change without notice.
  • Brand and product names mentioned are trademarks of their respective companies.
  • The terms HDMI and HDMI High-Definition Multimedia Interface, HDMI trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.
  • The actual      transfer speed of USB 3.0, 3.1, 3.2, and/or Type-C will vary depending on many      factors including the processing speed of the host device, file attributes and      other factors related to system configuration and your operating environment.
  • Actual data throughput and WiFi coverage will vary from network conditions and environmental factors, including the volume of network traffic, building material and construction, and network overhead, result in lower actual data throughput and wireless coverage.
  • Quoted network speeds and bandwidth based on current IEEE 802.11ac specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac-compatible for best results.