SFF2x5 4.25Gbps Dual fiber Optical Transceiver is high quality Optical Transceiver produced by F-tone through independent research,Mainly used in1.0625 / 2.125 / 4.25Gbp/s Fiber Channel;I-temp and C-temp two version; widely used in telecommunications networks, aerospace industry, Aviation, electricity, railways, medical, transportation, communications, and other major areas.