100% brand new and high quality
 The USB Virtual 7.1 Channel Sound Adapter is a portable sound controller that can add 3D sound to any PC equipped with a USB port. The device is small enough to fit comfortably in the palm of the hand and light for easy transportation. It is also easy to use - simply plug the device into a spare USB port and it provides instant, high-quality audio via speakers or headphones. It produces a superior sound to its 5.1 predecessor.
Compatible with USB 2.0 full-Speed Specification
Compatible with USB Audio Device Class Specification 1.0
Compatible with USB HID Class specification1.1
Include Xear 3D,the virtual 7.1 channel sound simulation software for Windows XP/Vista 98se/ME/XP/2000/2003/Linux, Mac OS
USB2.0 Full-Speed (12Mbps) Specification
Connectors: USB Type A, Stereo output jack, mono microphone input jack
USB bus-powered, no external power required
LED indicators: Microphone-Mute Status, Activity
Size:5.70*2.50*1.40cm/2.24"*0.98"*0.55"
Quantity:1Pc