Description:1: 5HV2 USB 7.1 Channel External Sound card Game profeional,2: It is a highly flexible audio interface which can be used wither with desktop or laptop systems.3: Bundled with Xear 3D Sound simulation software, it turns your stereo speaker or earphones into 7.1 channel environment.4: No driver required. just plug and play for instant audio palyback,5: Also compatible with all major operation systems Features:1 Compliant with usb 2.0 Full-Speed(12Mbps) Specification2 Compliant with usb audio device cla specification3 Compliant with usb HI D cla specification 1.14 USBbus-powered mode. no external power required5 Connectors:USB type-A, stereo output jack,morlo microphone input jack6 Functional keys:Microphone-Mute, Speaker-Mute, Volume-UP,Volume-Down System requirement:1 Desktop or laptop PC with usb port2 Windows 98SE/ME/2000/XP/Server2003/Vista,Linux,MacOS10 Or higher3 Xear 3D(vIRTUAL 7.1 channel sound simulation software) for windows XP/Vista/7/104 Stereoactive speaker or stereo earphone5 Mono microphone(Optional) Package:1*USB Sound CardNO Retail Box