The Robot Hub has 4 USB ports where you can plug in your mouse, keyboard or any other USB device without having to use up all your USB ports on your computer. 1 port = 4 USB 2.0 ports. Now that"s efficiency! This fun little desktop hub has moveable arms and glowing blue LED eyes when transferring data. It comes with an extension cable and is great for getting the most out your hardware.Robot HubFeatures: Smart robot design LED eyes indicating data activity Provides 4 additional USB ports USB 2.0 hi-speed transfer Windows/Mac OSX and Linux compatible plug-and-play