Wewdigi&reg; 3 in 1 Computer Laptop Speed 180 Degrees Rotatable USB 2.0 Hubs R for Pc Computer Laptop Portable size, Compact, light weight design Plug and play, no driver installation required. Expand 3 USB ports supply up to 500mA current per port. Power consumption, low operating temperature so solts and slots without interfere with each other. Allows simultaneous operation of up to 3 separate devices all attached to a single USB port.