The IOGEAR GUH304P is a 4-port USB 3.0 powered aluminum hub, offering SuperSpeed data transfer rates of up to 5Gbps - 10x faster than USB 2.0. Compatible with Mac and Windows, and backwards compatible with 2.0, 1.1, and 1.0 devices*, it's designed to match Macbook computers. Plug-n-Play, with power adapter included and overcurrent protection, you get reliable, high-speed data transfers hassle-free.