FireWire is Apple Inc.'s brand name for the IEEE 1394 interface. It is also known as i.LINK (Sony's name). It is a personal computer (and digital audio/digital video) serial bus interface standard, for high-speed communications and isochronous real-time data transfer. FireWire has replaced Parallel SCSI in many applications, due to lower implementation costs and a simplified, more adaptable cabling system.
Almost all modern digital camcorders have included this connection since 1995. Many computers intended for home or professional audio/video use have built-in FireWire ports, including all Apple and Sony laptop computers and most Dell and HP models currently produced. It is also widely available on retail motherboards for do-it-yourself PCs, alongside USB. FireWire was used with initial models of Apple's iPod, but later models eliminated FireWire support in favor of USB due to space constraints and for wider compatibility.