Type: PCI Express to 1394 / USB Card External USB Ports: 2x USB Ports Internal USB Ports: 2 x USB 2.0 header + 1x USB 2.0 port External 1394 Ports: 2x 1394B Ports Internal 1394 Ports: 1x 1394B Port Standard: USB2.0/1394B Data Transfer Rate: 1394B: 800/400/200/100 Mbps USB 2.0: 480/12/1.5 Mbps Operating Systems Supported: Microsoft Windows 2000/XP/XP 64-bit/Vista