The Rocstor Premium 7-Port USB 3.0 Super Speed HUB is designed for connecting seven USB devices from a host computer or another hub. It can work on Windows 7, Vista, XP, 2003/2000/ME, Mac OS X and various Linux kernels without any additional driver. It’s convenient and helpful for your limited space. This 7-Port hub offers (2) two USB 2.4A charging USB ports. Two (2) 2.4 amp dedicated charging ports (DCP) provide fast charging for your smartphones, tablets and other USB-charged devices. The charging and data ports work simultaneously, so you can conveniently fast-charge your mobile devices while still using your USB 3.0 devices.