This Sabrent AU-EMAC 2.1 Audio Sound Card Adapter is a highly flexible audio interface, which can be used with either laptop or desktop system. No driver required, plug-and-play for instant audio playing and compliant with all mainstream operation systems. Simply Plug the Sound Adapter into your USB port, and then plug your headphones into the Adapter. Features 3D stereo USB audio adapter. USB 2.0 Hi-Speed specification. Backward compatible with USB 1.1 Connectors: USB type A, stereo output jack, microphone input jack. No external power required. Plug & Play, no drivers needed. System requirements windows 8, Windows 7, Windows Vista, Windows XP, Mac OS 8.6 or above Note: For Mac user, you may need to re-set the audio input and output settings on your computer. What''s in the box? USB audio sound adapter 2 Feet Extension USB cable