Virtual 7.1 Channel Sound Adapter Double USB Microphone And

Complaint with usb2.0 full -speed ( 12 mbps ) specification compliant with usb audio device class specification1.0 compliant with usb hid class specification1.1 usb bus - powered mode . no external power required connectors : usb type - a, stereo output jack, mono microphone- input jack functional keys: microphone-mute,headset-mute,volume-uo,volume-down led indicators : microphone-mute status , activity include xear 30, the vitrual 7.1 channel sound sumulation software for windows xp/vista