Aluratek 4-Port USB 3.0 Hub: * 4 USB 3.0 ports * Compatible with USB 3.0, 2.0 and 1.1 devices * Data transfer rates up to 5Gbps * Automatically switches between self- and bus-powered modes * Plug and Play * Hot swappable * Hot pluggable * Includes power adapter * Compatible with Windows XP/7/8 and Mac OS X