Aluratek AUH0304F 4-Port USB 3.0 SuperSpeed Hub with cable... SuperSpeed data transfer rate up to 5Gbps - 10 times faster than USB 2.0; Compliant with USB 3.0 specification Revision 1.0; Backwards compatible with USB 2.0 and USB 1.1; (x4) USB ports for easy expansion; Bus Powered, USB 2.0 only - power adapter (included) needed for USB 3.0; Individual port over-current protection; Plug-n-Play, Hot swappable & Hot pluggable; Windows XP, Vista & 7 OR Mac OS 10.4.11 or later (USB 2.0 only). 6' cable included.