Key features very compact 4 port usb 20 hub ideal for notebook users short usb cable attached that can be clicked to the body of the hub supports usb 20 up to 480 mbps and usb 11 up to 12 mbps peripherals package contents 4 port usb 20 hub userrsquos guide system requirements windows 7 vista or xp intel based mac with mac os x 105 leopard or higher usb port