MAXAH&reg; USB 2.0 Mic / Speaker Surround Sound Virtual 7.1 Channel 3D Audio External Sound Card Game Adapter(black). Complaint with USB 2.0 Full-speed (12Mbps) specification. USB bus-power mode,no external power required. Connectors:USB Type-A, stereo output jack,mono microphone input jack connectors. Driverless No driver required for WINDOWS 98SE/ME/2000/XP/Server 2003/Vista,Linux,MacOS. Complaint with USB Audio device class specification 1.0 .