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IEEE1394, sometimes also called Firewire or iLink is a serial highspeed bus protocol initially invented by Apple Computer in 1995.

Implementing the IEEE1394 Bus Protocol is a quite expensive process, in opposition the spec is not open, many parts of the protocol are patented and implementors have to obtain documentation and licenses at the IEEE1394 Trade Alliance (

Since every device has to implement both host and client modes of operation, IEEE1394 chipsets are usually quite expensive compared to USB chipsets providing the same functionality