Feature: 1. Supports Multiple Devices: Connect up to 5 devices simultaneously, enabling seamless connection between computers and other Bluetooth-enabled devices. 2. Bluetooth 5.3: Equipped with a high-performance Bluetooth 5.3 chip, offering high bandwidth, low power consumption, and fast response for a smooth, lag-free experience. 3. External Antenna: USB Bluetooth adapter features an external 4dBi high-gain antenna for enhanced signal strength and extended transmission range of up to 100 meters in open space. 4. Lossless Transmission: Supports APTX audio technology with a 44.1kHz sampling rate, delivering CD-quality HiFi sound. 5. Compatible Systems: Plug-and-play design with no driver required; compatible with Windows 8.1, Windows 10, and Windows 11. Specification: Item Type: USB Bluetooth 5.3 Adapter Material: ABS Bluetooth Version: 5.3 Frequency Range: 2.4GHz (2402–2480MHz) Transmission Distance: 0–100M Interface Type: USB Operating System: Windows 8.1, Windows 10, Windows 11 Package List: 1 x Bluetooth Adapter 1 x Instruction Manual