SIIG's USB 2.0 2-Port Hub is an ultra-portable USB 2.0 hub designed to add two USB 2.0 ports to your desktop or notebook computer. This USB hub supports USB 2.0 data transfer rates up to 480Mb/s, features over current protection to protect both connected device and the hub itself from unforseen power surges, is powered by the USB bus for low power consumption, and allows you to hot-swap devices (connect and disconnect) without first turning your system off.