... .0 peripherals can transfer rate of up to 5Gbps documents, while maintaining existing USB peripheral compatibility, compatible with USB2.0, 1.1 ... USB2.0, USB1.1, USB1.0 USB power output: Up to 5V 900mA Built-in USB interface supports 4P hot-swap power function ... support Windows2000/xp/vista/win7 USB 3.0 Adapter ,PCIe To 2 Port ...