ReTrack 7.1 Channel External Sound Card USB Adapter(Black)

The USB 2.0 External 7.1-Channel Audio Sound Card Adapter. It can work with either desktop or laptop. And with the Xear 3D Sound Simulation software, it extends stereo speaker or earphone to 7.1 channel environment, giving high quality sound enjoyment.Connectors: USB Type A, Stereo output jack, mono microphone input jackXear 3D virtual 7.1 channel sound simulation software for Windows XP / Vista is includedFunctions keys: Microphone-Mute, Speaker-Mute, Volume-Up and Volume-Down