PUREX Technology 4-PORT USB3.0 HUB - PUSB-SSA8 4 SuperSpeed USB 3.0 ports support data transfer rates of up to 5Gbps. (Note: actual rate will depend on the capability of your device.) Backward compatible with USB 2.0 / 1.1. Compact & Slim, Strip-shape design, No Power Adapter Required Supports Plug and Play and hot swapping. No installation of drivers required for Windows XP / Vista / 7 / 8 or Mac OS X 10.2 and above. Turn 1 USB 3.0 port into 4 in the blink of an eye, eliminating cable chaos. No drivers required. Ideal for Ultrabook, tablets, and Desktop PC