USB 2.0 Hub 3 Ports USB Sound Card External Stereo Adapter 3.5mm with Headphone and Microphone High Speed for macOOTDTY  Features: 100% brand new and high qualityUSB 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.It is also a highly flexible 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.Feature of Stereo Sound Adapter.3D stereo USB adapter.Backward compatible with USB 1.1 /2.0 - Connectors: USB type A, stereo output jack, microphone input jack.No external power required.Plug & Play, no drivers needed.Specification: Material: ABS PlasticInput: USB2.0Color: BlackOutput: 3-ports USB2.0, CTIA OMTP jacks, Micphone jack.Sound Card: 7.1 ChannelOFF/ON switchThe size: approx. 90x31x11mm/3.54x1.22x0.43inThe cable length: approx. 45cm/1.77inPackage Includes: 1PC X Sound Cardnote: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!