The pex1394a2v 2 port pci express firewire card lets you add two native firewire 400 ports to your desktop pc allowing you to connect ieee 1394a firewire devices such as digital cameras external hard drives dv camcorders and more when two devices are simultaneously connected this pcie firewire adapter reduces performance bottlenecks by offering support for data transfer rates up to 400mbps to each port the firewire card employs dual bus architecture to provide the maximum bandwidth to each indiv