Features: Compliant with USB 1.1 & 2.0 specification Plug and play hot swapping, capability , easy to install and use Slim size ,easy for carry Specification: 1.The most tiny, fashionable USB 2.0 HUB with 4Ports 2.Connect up to four USB2.0 (USB1.1) devices 3.Speed supported: 480Mbps ,12Mbps and 1.5Mbps Support System: Compatible with Windows XP,2000,ME,98/98SE/Vista ,MAS9.2, OS X or Later,Linux Kernal 2.4 or later