Model NameCS303Chipset VL810 Features: ◊  Compliant to Universal Serial Bus 3.0 Specification Revision 1.0◊  Compliant to Universal Serial Bus Specification Revision 2.0◊  Supports USB 3.0 specification type A down-stream ports X4.◊  Supports USB Super-Speed (5Gbps)/High-Speed (480Mbps)/Full-Speed (12Mbps)/Low-Speed (1.5Mbps) Operation.◊  Over current protection on each down-stream port◊  Plug and Play.◊  Supports LEDs for power indication.◊  Dimension: 82.5*50*17mm◊  Color: Silver◊  Power Adapter: 5V/2A Connectors: ◊  4 x USB3.0 Ports System Requirements ◊ Notebook or Desktop PC with an available USB Host Connection (USB3.0 recommended)◊  Windows XP, Server 2003 & 2008, Vista, 7 with the latest Service Packs Package contents:◊  USB3.0 4Port HUB◊  User Manual◊  Power adapter◊  USB3.0 Cable