100% brand new and high quality. Quantity: 1 Add a virtual 7.1 channel surround sound to your computer with this adapter Plug & Play and easy to use Requires Windows 98SE, ME, XP, Vista, 7, Server 2003, Server 2008; Linux. Must use a USB 2.0 Port Plug & Play, no driver required Use with desktop, notebook, Windows, or Linux Features Volume Up/Down, Microphone Mute, Headset Mute Requires a USB 2.0 Port Stereo output jack, mono microphone input jack 1.USB 2.0 at full speed (480 Mbps) specifications 2.With the first-class 1.0 USB audio equipment specification 3. USB bus - power supply mode, no external power supply 4. Connector: USB type A socket, 2 stereo output socket, two single track microphone input jack 5. Function key: microphone mute, headphones mute, volume increase, reduce the volume 6. Included in Windows XP/Vista of xear3D , virtual 7.1 track sound simulation software 7. In the following operating system need not install driver Windows/SE/ME / 2000 / XP / Server 2003 / Vista/ windows 7 and 8 Linux/Mac OS System requirements: 1.The desktop or notebook computer with USB interface 2.Suitable for Windows 98 / se/ME / 2000 / XP/Server 2003 / Vista/ windows 7 and 8, Linux/Mac OS 10 or more 3.Xear3 d (virtual 7.1 track sound simulation software) for Windows XP/Vista 4.complaint with USB2.0 full-speed(12Mbps)specification 5.compliant with USB Audio Device class specification 1.0 6.compliant with USB hid Class specification1.1 7.USB bus-powered mode,no external power required 8.Connectors :USB type-A,Stereo output jack,Mono microphone-input jack 9.Functional keys : microphone-mute,headset-mute,volume-up,volume-down 10.LED indicators:microphone-mute status activity 11.include X ear 3 ,THE Virtual 7.1 channel sound simulation software for windows XP/Vista 12.driverless -no driver required for windows 98 SE/ME/2000/XP/Server 2003/Vista.Linux,Mac os Brand other SKU 100103475_NP-1020359379