Fangrui Product Details Plug The Sound Adapter Into Your Usb Port, And Then Plug Your Headphones Into The Adapter. 7.1 Channel Sound Without The Investment In A Whole Set Of Speakers! Tired Of Trying To Stretch Your Cables Around The Back Of Your Computer Plug This Adapter Into A Usb Port On The Front, And Use The Headphone Jack (for Output) Or The Miniphone Jack (for Input). The Usb Virtual 7.1 Channel Sound Adapter Is A Highly Flexible Audio Interface Which Can Be Used Either With Desktop Or Notebook Systems. Comes Bundled With Xear 3d Sound Simulation Software, And Turns Your Stereo Speaker Or Earphones Into A 7.1 Channel Environment! Usb2.0 Full-speed (12mbps) Specification Usb Hid Class Specification 1.1 Usb Audio Device Class Specification 1.0 Usb Bus-powered, No External Power Required. Technical Specification New 7.1 Channel External Usb Audio Sound Card Adapter Usb2.0 Full-speed Specification Connectors: Usb Type A, Stereo Output Jack, Mono Miniphone Input Jack Usb Bus-powered, No External Power Required Led Indi