IEEE 1394 is also known as FireWire or i. LINK and was developed by Apple computer. The IEEE 1394 connector is smaller than a USB plug. IEEE-1394 is fully plug and play and a number of devices can be connected at the same time.
Any device can send and receive data to any other connected device.
All automatic and hot pluggable. Yes, the protocol is designed for this. 6 wire is the same plus two more for DC power.