This 4 Port PCI Express 1394a FireWire Adapter Card turns a PCI Express slot into three external and one internal 1394a ports, allowing you to connect portable drives, digital camcorders and more to your desktop computer. The adapter card supports hot-swapping, so you"ll be able to plug, unplug, and swap your FireWire peripherals with ease, without having to power down the computer. It also includes a low profile bracket that makes the adapter card suitable for installation in slimline or small/micro form factor systems.