Usage Tips:1、Wide Compatibility: Compatible for Windows 7 8.1 10 11, the USB Bluetooth adapter offers broad compatibility across a range of operating systems, making it suitable for a wide variety of devices and applications. 2、Bluetooth 5.1: The USB Bluetooth adapter boasts Bluetooth 5.1 chip that ensures stable connections and enables long distance transmission. Experience seamless pairing with your Bluetooth enabled devices and enjoy enhanced performance. 3、Supports 7 Devices: With the ability to support up to 7 devices simultaneously, the adapter minimizes signal congestion and provides convenient experience when connecting multiple devices. 4、Plug and Play: Featuring plug and play functionality, the USB Bluetooth adapter requires no driver installation, making it incredibly convenient and user friendly, simply insert the adapter into your computer's USB port. 5、With Antenna: Equipped with a built in antenna, the adapter enhances signal reception and ensures stable transmission up to 200m / 656.2ft away. Enjoy seamless Bluetooth experience without interruptions or dropouts. Item Type: Bluetooth 5.1 Adapter Material: ABS Bluetooth Version: 5.1 Operating Frequency: 2.402GHZ to 2.480GHZ Transmission Distance: 0-200m / 0-656.2ft Interface Type: USB Compatible System: for Windows 7 8.1 10 11 1 x Bluetooth Adapter 1 x Antenna 1 x User Manual