This high speed serial interface enables fast data transfer from external peripherals such as external hard disks, digital cameras & video cameras. IEEE-1394a is one of the fastest serial interface standards ever developed which makes it great for use with high-speed or bandwidth-intensive multimedia peripherals such as digital video cameras, audio, streaming & graphics. The PCIe card features two external IEEE-1394b ports located on the PCIe card bracket & one internal port header located on the PCIe card to connect to front panel 1394a port on HP desktop. All a customer needs is an open PCIe slot, this PCIe card for the card to function at 400 Mb/s.