The USB Virtual 7.1 channel sound adapter is a highly flexible audio interface which can be used either with desktop or notebook systems.No drivers required, just plug and play for instant audio playback, also compatible with all major operation systems.USB bus-powered mode, no external power required.Compatible with USB 2.0 full-speed(12Mbps) .Compatible with USB audio device class 1.0.Compatible with USB HID class 1.1.Type: USB Sound CardCover Material: PlasticConnectors: USB Type-A, Stereo Output Jack, Mono Microphone-Input JackFunction Keys: Microphone-Mute, Speaker-Mute, Volume-up,Volume-downLED Indicators: Microphone-Mute Status, ActivitySupport: for Windows 98SE/ME/2000/XP/Server 2003/Vista, for Linux, for MacOSFeatures: Driverless, Easy to Use, Good QualityNotes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Package Includes:1 x USB Sound Card