USB PCI USB 2.0 4+1 port controller Backward compatibile with USB 1.1 Transfer rate: Each port up to 480Mb USB 2.0 EHCI and USB 1.1 OHCI Compliant Backward compatibile with USB 1.1 devices Transfer rate: Each port up to 480Mbps Connects up to 127 USB devices simultaneously Over current protection, each port 500mA