DICOCO USB 2.0 External Virtual 7.1 Channel/Ch Surround Sound Card Audio Adapter (Black) External USB 7.1 channel sound card audio adapter,can be used with any desktop ,laptop or tablet pc. USB bus-powered,no external power required. USB 2.0 full-Speed (12Mbps) specification,plug and play. LED indicators: Microphone-Mute Status, Activity. Compatible with Windows 2000/XP/Vista/7/8.