USB 2.0 Hub 4 Port Extender USB Extension Hub can expand 1 USB port to 4 USB 2.0 data ports, multiplying the connections of your computer. Connect up to 4 peripherals and enjoy a stable connection. Compatible with USB 2.0 and 1.1 Reduced size and extraordinary lightness, easy to carry along when travelling. Support data transfer rate at 1.5/12/480Mbps. Compatible with all operating systems. No external power source needed. “Plug & Play” installation.