USB Virtual 7.1-Channel Sound Adapter (7.1-Channel Sound is for Windows Based System Only) * Driver-less - No Driver Required for Most Windows, Linux and MAC OS Systems * Connectors: USB Type-A, Stereo Output Jack, Mono Microphone-Input Jack * Functions Key: Microphone-Mute, Speaker-Mute, Volume-Up, Volume-Down * LED Indicators: Microphone-Mute, StatusActivity