Specification: _x005f_x000D_ Model Number: USB Adapter _x005f_x000D_ Product Name: 5.1 Bluetooth-Compatible Adapter _x005f_x000D_ Product Size: About 30x15x7mm/1.18x0.59x0.27in _x005f_x000D_ Product weight: 2g _x005f_x000D_ Bluetooth tooth-compatible version: 5.1 _x005f_x000D_ Frequency range: 2.4GHz (2402-2480MHz) _x005f_x000D_ Transmission distance: 0~20M _x005f_x000D_ Rated voltage: DC 5V _x005f_x000D_ Interface type: USB _x005f_x000D_ Operating system: Win7, Win8, Win8.1, Win10, Win11 (systems above Win8 are free of drive) _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ 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! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x USB Adapter 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 transmission speed, more device connections, and more stable transmission 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 wireless 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 wireless 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).