FireWire(redirected from IEEE 1394a)
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FireWireOfficially the IEEE 1394 High Performance Serial Bus (HPSB), FireWire is a high-speed interface mostly developed and promoted by Apple for video transmission. Introduced in 2000, FireWire was added to camcorders and a variety of A/V equipment. Even early iPods could connect via FireWire. Still included on Mac laptop and desktop computers, modern camcorders have replaced FireWire with USB, HDMI and other video outputs.
FireWire 400 and 800
FireWire 400 is limited to a distance of 4.5 meters. In 2003, FireWire 800 increased the range to 100 meters and doubled the transfer rate. FireWire supports 63 devices, real-time data transfer, hot swapping and simultaneous multiple speeds. The faster 1600 and 3200 versions never got into production.
FIREWIRE VERSION TRANSFER RATES1394a - 4.5 METER CABLE LENGTH FW400 400 Mbps 1394b - 100 METER CABLE LENGTH FW800 800 Mbps FW1600 1600 Mbps FW3200 3200 Mbps
|FireWire Sockets and Compatibility|
|FW800 is backward compatible with FW400. One end of a "bilingual cable" has an FW800 plug, while the other end is FW400. Sony's i.Link is a miniaturized socket that connects to cables with i.Link, FW400 or FW800 at the other end.|
|Easy to Tell|
|FireWire cables are easily distinguished from their USB counterparts.|
|Dual Mode FW/USB|
|This external hard drive can connect to the computer via FireWire or USB, whichever cable is plugged in.|