Short Description: Size: 57 x 25 x 12mm Weight: 25g System: Windows 2000 / XP / Server 2003 / Vista, Linux, Mac OS 100% New. Interface Type: USB Origin: CN(Origin) Interface Type: USB Model Number: Audio Sound Card Adapter Type: External Channels: 7 Product Description: LED indicators: Microphone-Mute Status, Activity USB2.0 Full-Speed ( 12Mbps ) Specification USB Class Specification 1.1 USB Audio Device Class Specification 1.0. USB bus-powered, no external power required. The USB 2.0 External 7.1-Channel Audio Sound Card Adapter. It can work with either a desktop or a laptop. Software, extends stereo speakers or earphones to a 7.1 channel environment, giving high-quality sound enjoyment. Connectors: USB Type A, Stereo output jack, mono microphone input jack 3D virtual 7.1 channel sound simulation software for Windows XP / Vista is included Functions keys: Microphone-Mute, Speaker-Mute, Volume-Up, and Volume-Down What’s in the box: 1 x USB sound card Weight: 0.2 SKU: 220224120536