W&middot;Z Super Speed 4-Port USB 3.0 Hub 3-Foot USB 3.0 Cable Included Backward Compatible with USB 2.0, 1.1 and Revision 1.0 USB HUB Smart Charging Port - Comes with 1 extra port for fast charging of mobile phones, IPAD, Android devices, Samsung Galaxy, offering quick charges of devices up to 2.4A, 5V charge input 4 SuperSpeed ports delivering transfer speed of up to 5Gbps (Note: actual rate will depend on the capability of your device). Backward compatible with USB 2.0 / 1.1. LED indicators for each USB 3.0 ports, Built in Power On/Off blue switch, Supports plug-and-play and hot-swapping. No installation of drivers required for Windows XP / Vista / 7 / 8 or Mac OS X 10.2 and above.