PCIE TO USB2.0 4PORT MS9990 Compliant with USB 2.0, PCIe interface, Per-port Output Current 500mA with over-current detection The product chip ... easy to use, high transfer rate, compatible with USB1.1 Regulation Fan, in line with the PCI2.2 and PCI Power Management ... support: Windows 98, ME, NT, 2000, XP, Vista. Win7 and Linux PCIE USB2.0 4 PORT MS9990