Nitroav 5-port Dual Processor 1394b/firewire800 Professional PCI Express (X1) Host Bus Adapter (Macpro/win/linux) For Use With High-Speed Digital Audio and Video Devices! Provides Excellent Results for Bandwidth-Intensive Transfers! 2 Independent 1394b chips for Superior Performance and Quality! PCI Express (x1) for blazing fast bandwidth capability!