ASUS BT-adapter USB-BT540 BT 5.4, USB

Features

The USB-BT540 adapter adds Bluetooth connectivity to desktops and laptops via a USB interface. Support for Bluetooth 5.4 ensures compatibility with modern wireless devices.

Bluetooth Low Energy technology enables efficient connection to low-power accessories. This is useful for devices that require extended battery life.

The adapter supports multiple simultaneous connections, allowing different peripherals to be used together. This simplifies everyday wireless setups.

Its ultra-compact size makes it suitable for continuous use without occupying significant space. The device can remain plugged into a USB port without inconvenience.

Stable connectivity is maintained across both classic Bluetooth and BLE modes.

Technologies (used)

• Bluetooth 5.4
• Bluetooth Low Energy (BLE)
• Bluetooth Classic (BR/EDR)
• FHSS
• Multi-device connectivity

Technical specifications

• Part number: 90IG09N0-MO0B10
• Type: Bluetooth USB adapter
• Interface: USB 2.0 Type-A
• Standards: Bluetooth 5.4, BR/EDR, BLE
• Data rate: up to 3 Mbps (BR/EDR), 2 Mbps (BLE)
• Range: up to 10 m / up to 40 m (BLE, open space)
• Frequency: 2402–2480 MHz
• Modulation: GFSK, π/4-DQPSK, 8-DPSK
• OS support: Windows 10/11, Linux
• Dimensions: 14.9 × 17.4 × 7.1 mm
• Weight: 1.9 g
• Package: adapter, quick start guide, warranty card

Who it's for

• PCs without built-in Bluetooth
• wireless peripheral connectivity
• compact workspaces
• low-power device ecosystems

Conclusion

The ASUS USB-BT540 provides a compact way to enable Bluetooth connectivity. It supports modern standards and fits everyday wireless usage scenarios.