Size: 2-port 1394AThe RC-504 PCI Express card turns a PCI Express slot into two external Fire wire 400 (1394a) 6-pin ports and one internal Fire wire 400 (1394a) 6-pin port which shares with first external Fire wire 400 port. The card can be installed in any available PCI Express slot and supports data transfer rates up to 400Mbps. It is compliant with IEEE 1394-1995, 1394a-2000 and ohci 1.1 standards, and supports DV camcorders, hard disk, removable drives, scanner, digital cameras and other fire wire audio/video devices. Onboard power Connector provides reliable power source.