Support external power socket， to supply for each USB 3Up to 900mA Maximum /port connection capacitySupport 3 x USB ports， transfer speed up to 5GbpsStable and reliable FL1100 chipsetCompatible with PCI-Express and 1.0aComplies with PCI express base specification revision 2.0Complies with universal serial bus 3.0 specification revision 1.0.Support the following data transfer rate:USB 2.0 mode up to 480 MbpsUSB 3.0 mode up to 5 GbpsFaster than High-Speed USB 2.0With Intel compatible and extensible host controller interface (XHCI) Standard revision 0.95Support rate of USB data transmission 1.5 / 12 / 480 / 5000 MbpsThe built-in DC power receives additional power， to meet USB3.0 5 V/900mA output power levelHot plug， you can connect / disconnect don't turn off the power supply system equipment.Working temperature: 0 C to 57 C， humidity: 5% ~ 95% relative humidityWorking voltage: + 3.3 V~ + 5 V， storage temperature: - 20 C to 85 CSupport system : Windows 2000/XP/2003/Vista/WIN7/WIN8/8.1Package Included:1 x 54mm Express Card 1 x Driver CD