Yerwal 4 Port Portable USB 3.0 Hub with Power Switch for Ultra Book, MacBook Air, Windows 8 Tablet PC [Bus-Powered, Built-in 1ft USB 3.0 Cable] (Black) Supports transfer speeds up to 5Gbps (USB 3.0), 480Mbps (USB 2.0), 12Mbps (USB 1.1) Easily add four USB 3.0 ports to your PC, laptops and tablets, eliminating the trouble of switching among devices. Lightweight design effectively saves space, yet doesn't overload your pocket or bag, take a mobile USB work station anywhere you go! Compatible with all the electronic devices with USB cable, like smartphones, tablets, power bank,MP3,camera...etc. Package :1pc 4-Port USB 3.0 Hub&1 pc Yerwal Shop gift