This PCI to IEEE1394 adapter card provides three IEEE1394 FireWire ports on your PC or Mac. Using the IEEE1394 high-speed 400Mbit/sec. transmission, it is the high-performance connection between your digital camcorder, DVD, and PC/Mac. It is the perfect solution for users that have no integrated IEEE 1394 support who wish to connect Digital Video Cameras and other IEEE 1394 devices to their PCs. This FireWire card supports device speeds at 100Mbps, 200 Mbps, and 400 Mbps, and provides power to any attached IEEE 1394 peripheral, device or hub. This function allows bus-powered devices to operate without the need of an external power adapter.