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 predeceor. Compatible with USB 2.0 full-Speed Specification Compatible with USB Audio Device Cla Specification 1.0 Compatible with USB HID Cla 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