800Mbps PCI-E Express Card, 1394a IEEE 1394b Controller Card with Firewire Cable, for Video,Audio Transmission,Industrial Cameras,Video Cameras Support Provisions of IEEE P1394b Revision 1.33+. Fully Backward Compatible to 1394a Specification. Fully Interoperable with FireWire, iLink, and SB1394 Implementation of IEEE 1394 Standard. Compliant with PCI-Express Revision 1.0a. Compliant with IEEE 1394 OpenHCI Specifications V1.1 and V1.2. Compliant with IEEE 1394-1995 for a High Performance Serial Bus.Compliant with IEEE 1394a-2000 Standard. The PCI-Express bus transmission speed of 2.5Gbps, far higher than the PCI bus, fully shows high-speed transmission performance of IEEE 1394b, and is backward compatible with devices in 400/200/100Mbps transmission speed.