StarTech.com 4-port SuperSpeedUSB 3.0 Hubs - StarTech.com ST4300USB3GB, The Startech.com ST4300USB3GB 4-Port SuperSpeed USB 3.0 Hub allows you to add 4x additional USB 3.0 ports from a single USB 3.0 connection to the host computer system. Backward compatible with USB 2.0 and USB 1.x standards, this USB 3.0 hub still supports older USB devices and can also be used as a hub on older systems that do not have USB 3.0 ports.With the capability to mix and match USB 3.0/2.0/1.x devices and be used with or without the included external power adaptor, this hub offers the best of versatility and portability. Connect high powered USB devices with the included external power adaptor, or simply use as a bus-powered hub.Backed by a StarTech.com 2-year warranty and free lifetime technical support. StarTech.com ST4300USB3GB 4-Port Black SuperSpeed USB 3.0 Hub