RAYSUN 7.1 Channel USB External Sound Card Audio Adapter Cable Mic Speaker 3.5mm Jack Converter Virtual Surround Sound Adapter Equalizer for PC Desktop Notebook 1, 7.1 Channel USB external Stereo Sound Adapter; 2, Driverless for Windows 98SE/ME/2000/XP/Server 2003/Vista/7/8/Linux/Mac OSX; 3, USB power supply, no need external power; 4, Complaint with USB 2.0 Full -speed ( 12 Mbps ) specification; 5, Package: 1 x USB 7.1 Channel sound adapter.