1,Support 32Bits 33MHz PCI Interfacing 2,Compliant with 1394 OpenHCI Specification V1.2 PCI 1394B 1,Support 32Bits 33MHz ... PCI Interfacing2,Compliant with 1394 OpenHCI Specification V1.23,Full Backward compatible to FireWire 400 ... /ME/2000/XP/XP 64-bit/VistaPCI 1394B PCI TO 1394 3PORTS FIREWIRE CONTROLLER CARD