Mini USB Bluetooth Wireless Adapter Dongle Dual Mode CSR V4.0 for Windows 7,8 PC Computer Laptop Connect your Computer/Laptop with Bluetooth Enabled Devices ,such as Mobile Phones, Printers, Headsets, Stereo headphones ,speaker and others CSR 4.0 chipset ,low energy technology and dual-mode bluetooth transfer Supports Bluetooth keyboards, mice, headsets,speaker and other bluetooth device Simplified use with an attractive user interface Support all the version of windows operating system