Features: 1. WiFi, Bluetooth 2 in 1. 2. This product is drive-free, bluetooth supports win10,11 systems drive-free, the network card function is built-in Flash, plug in the computer has a built-in driver, support windows system. 3. This 8821CU chip, do not install the driver Bluetooth is 4.2, after installing the driver Bluetooth upgrade to 5.0. Note: For Bluetooth 5.0, you need to uninstall the original driver and reinstall the ooth 5.0 Specification: Bluetooth Specification Bluetooth version: 5.0 Transmission distance: 5 meters Antenna gain: 5dBi Wifi Speed:600Mbps Support operating system: For WIN 7/WIN8/ WIN 10 operating system Note: Bluetooth driver do not support windows XP/ VISTA /Mac Package includes: 1x USB Wifi Dongles