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TheTFC304B is a 4-port gigabit single-mode single-fiber transceiver,providing four 1000Mbps electrical port sand one1000Mbps SC optical port.It can convertelectrical and optical signals and transmit dataover long distances via fiber optic cable.TheTFC304B uses wave length division multiplexing(WDM)technology,transmit tingata wave length of1310nm and receiving at 1550nm.Its imultaneously transmits and receives data through asing lesingle-mode fiber,with a maximum transmission distance of 3km.