Coomoors USB External 7.1 Channel 3D Virtual Audio Sound Card Adapter for Computer Laptop The USB 2.0 Virtual 7.1 Channel Sound Adapter can work with either desktop or laptop. This highly flexible audio interface extends your stereo speaker or earphone to projected 7.1 channel environment, giving you high quality sound enjoyment. no software CD included or required Compact, portable, and convenient to carry. Compliant with USB 2.0 Specification