Turn a USB port into a virtual 7.1 channel Sound Card Works with USB enabled laptop and desktop computers Supports 7.1 surround sound USB sound card / USB external sound card / Laptop sound card / USB sound adapter / USB 7.1 sound card Plug-and-play installation Add speaker/headphone and MIC to almost any USB system without having to manually install drivers Built-in volume and mute controls and virtual 7.1 audio output for Windows