1. USB 2.0 3-Port Hub with Stereo Sound Adapter Combo is designed especially for laptops, tablets, and ultrabooks and expands one USB 2.0 high-speed port into three easily.2. It is also a highly flexible audio interface, which can be used with either laptop or desktop system; Simply Plug the Sound Adapter into your USB port, and then plug your headphones into the Adapter.3. Feature of Stereo Sound Adapter4. 3D stereo USB audio adapter5. Backward compatible with USB 1.1 /2.0 - Connectors: USB type A, stereo output jack, microphone input jack6. No external power required7. Plug & Play, no drivers neededInput: USB2.0Output: 3-ports USB2.0, CTIA OMTP Audio jacks, Micphone jack.Sound Card: 7.1 ChannelAudio OFF/ON switchcolour:WhiteMaterial:PC+ metalsize:The size: Approx. 90*31*11mmThe cable length: Approx. 45cmPackage Contents:1 x USB2.0 Hub with Stereo External Sound CardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.