3-Port USB 3.0 HUB Mix Sound Card with Power Supply 3 Ports Expansion / Mix Sound Card / 5Gbps Transfer Speed / Drive Free 3 Ports Expansion Turn your computer’s USB ports into three ports and 3.5mm audio / mix Mix Sound Card 3.5mm Audio port support both earphone and microphone 5Gbps Fast Transmission Three USB3.0 ports can be connected to multiple USB devices simultaneously, 5Gbps Transfer Speed Access to 8TB hard disk With external power port to easily drive large capacity