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. Type: PCI Express to 1394 Card External 1394 Ports: 3x 1394 Ports Internal 1394 Ports: 1x 1394 Port Standard: 1394A Data Transfer Rate: 400/200/100 Mbps Operating Systems Supported: Windows 2000/XP/Vista, MAC OS X and up Features: Compliant with IEEE 1394 OpenHCI Specifications V1.0 and V1.1 Compliant with PCI Express Specification 1.0a High speed data transfer rates of up to 400 Mbits/sec. Hot swap capabilities allows you to connect or disconnect devices without turning off your computer Parts: 1 year limited