... 4PORT MS9990 Compliant with USB 2.0, PCIe interface, Per-port Output Current 500mA with over-current detection The product chip ... variety of high-power transmission speed.Support Port: USB2.0/USB1.1Tailored to each port 500mA output current exceeds the currentdetection and ... , 2000, XP, Vista. Win7 and Linux PCIE USB2.0 4 PORT MS9990