Drive-free USB Adapter Bluetooth-Compatible 5.1 Wirele Multiple Connection Support Win7/8/8.1/10/11 for Mouse Keyboard HeadsetFeature:1. Multiple Connections:USB Bluetooth-compatible adapter realizes connection between computer and other Bluetooth-compatible devices.2. Chip 5.1 Bluetooth-compatible:Bluetooth-compatible 5.1 chip, to achieve faster transmiion speed, more device connections, and more stable transmiion conditions.3. Supporting Equipment:Connect the computer to the Bluetooth-compatible speaker, move the Bluetooth-compatible speaker freely, and enjoy the stereo high-definition sound effect. Connect a Bluetooth-compatible keyboard/mouse to realize that the computer does not have a Bluetooth-compatible function, and can directly connect to a Bluetooth-compatible keyboard/mouse to realize wirele freedom. Connect Bluetooth-compatible controller: play games freely and operate more flexibly. Connect Bluetooth-compatible earphones, throw away the shackles of traditional wired earphones, and enjoy the freedom of wirele music.4. Drive-Free:The computer USB adapter supports Win8 and above systems without drive, and Win8.1/10/11 is plug-and-play. Support Win7 (need to install the driver).5. Multiple Bluetooth-compatible Versions:The USB adapter can be downwardly adapted to 4.1/4.2/5.0 Bluetooth-compatible versions.Specification:Model Number: USB AdapterProduct Name: 5.1 Bluetooth-Compatible AdapterProduct Size: About 30x15x7mm/1.18x0.59x0.27inProduct weight: 2gBluetooth tooth-compatible version: 5.1Frequency range: 2.4GHz (2402-2480MHz)Transmiion distance: 0~20MRated voltage: DC 5VInterface type: USBOperating system: Win7, Win8, Win8.1, Win10, Win11 (systems above Win8 are free of drive) Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. 1 x USB Adapter