... .0 4PORT MS9990 Compliant with USB 2.0, PCIe interface, Per-port Output Current 500mA with over-current detection ... The product chip PCI USB 2.0 card, 480M speed surge. NEC chip quality assurance, better compatibility, in ... : Windows 98, ME, NT, 2000, XP, Vista. Win7 and Linux PCIE USB2.0 4 PORT MS9990