... USB2.0 4PORT MS9990 Compliant with USB 2.0, PCIe interface, Per-port Output Current 500mA with over-current detection The product ... use, high transfer rate, compatible with USB1.1 Regulation Fan, in line with the PCI2.2 and PCI Power Management 1.1 ... standard.Hot-swap and wake-up support equipmentOperating system support: Windows 98, ME, NT, 2000, XP, Vista. Win7 and Linux PCIE USB2.0 4 PORT ...