Description: 1.100% New.2.LED indicators: Microphone-Mute Status, Activity3.USB2.0 Full-Speed ( 12Mbps ) Specification4.USB Class Specification 1.15.USB Audio Device Class Specification 1.0. USB bus-powered, no external power required.6.The USB 2.0 External 7.1-Channel Audio Sound Card Adapter. It can work with either desktop or laptop