VIA-pci-to-usb2.0 4+1 ports card 1,1mUSB 2.0 EHCI and USB 1.1 OHCI Compliant 2,Backward compatibile with USB 1.1 devices 3,Transfer rate: Each port up to 480Mbps 4,Connects up to 127 USB devices simultaneously 5,Over current protection, each port 500mA 6,External port: USB-A x 4 7,Internal port: USB-A/Pin header port x 1 (sharing with first external USB VIA-pci-to-usb2.0 4+1 ports card