USB 3.0 4-Port External Hub, Black Color, UL 3.5A Power Adapter. The Syba Pocket-Sized USB 3.0 Hub is the most portable way to pack super-speed USB 3.0 technology anywhere you go. All you need is a single USB 3.0 port and the hub's external power adapter to get four ports of blazing-fast USB 3.0 capability with plug-and-play ease and support for USB 2.0 and 1.1 standards. Syba CL-HUB20126 4-Port Pocket-Sized USB 3.