USB 4 ports  HUB.Fully compliant with the Universal Serial Bus Specification version 1.1/2.0 full speed up to 480Mbps                                                    2.Single chip integrated USB HUB controller with e,bedded proprietary precessor                                 3.Support four bus-powered/self-powered downstream ports                                                    4.Built-in 3.3V voltage regulator allows single+5V operating voltage,resulting in reduced overall system cost                                                5.Provide up to 500mA current to each port which is sufficient for diverse devices                                             6.Hot plug and play                                             7. Design with supper streamline and mini size with color LED show(particular models)