Specification:

(1) USB 2.0 Version
(2) 4 ports
(3) Support windows me/2000/xp/vista
(4) Support Linux 2.4 or above
(5) Support Mac OS 8.5 or above

Feature:

(1) Transfered speed up to 480Mbps each port
(2) Backward Compatible with USB1.1
(3) plug-and-play and hot-swappable functions
(4) USB bus powered, no external power adapter