USB2.0 Full-Speed ( 12Mbps ) Specification
USB HID 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 environmen
Functions keys: Microphone-Mute, Speaker-Mute, Volume-Up and Volume-Down
Plug and Play. No drivers required for Windows 2000 / XP / Server 2003 / Vista, Linux, Mac OS
Compact, portable, convenient to carry