The UNITEK Aquaflow USB 4-Port Hub provides 4 High-Speed USB 2.0 ports for your high-speed connectivity needs. This device is USB 2.0 and provides a data transfer rate of up to 480 Mbps (high speed). It supports Windows XP, Vista and Mac OS X or later. The USB Hub also supports USB 1.1 device since it is backward compatible with USB 1.1 Specifications. It is very easy to use, Plug-n-Play, hot swappable and portable.