USB sound dongle with volume buttons

The USB Virtual 7.1 Channel Sound Adapter is a highly flexible audio interface which can be used either with Desktop or Notebook systems, It turns your stereo speaker or earphones into 7.1 channel environment. LED indicators: Microphone-Mute Status, Activity USB2.0 Full-Speed ( 12Mbps ) Specification USB Class Specification 1.1 USB Audio Device Class Specification 1.0. USB bus-powered, no external power required. This is USB 2.0 External 7.1-Channel Audio Sound Card Adapter. It can work with either desktop or laptop. it extends your stereo speaker or earphone to 7.1 channel environment, giving you high quality sound enjoyment. Connectors: USB Type A, Stereo output jack, mono microphone input jack Functions keys: Microphone-Mute, Speaker-Mute, Volume-Up and Volume-Down Use a powered hub for best results.