SIIG Firewire 800 3-PORT Pcie Rohs Firewire Ports: 3 Firewire Support: 1394b, 1394a Port type: 2x 9-pin Firewire 800 and 1x 6-pin Firewire 400 external ports OS Support: Windows 2000/XP/Server 2003/Vista, Mac OS X 10.4 or later