The Industrial Fast Ethernet transceiver provides the system designer with the ability to implement Industrial Fast Ethernet (100 Mbps) or Ethernet (10 Mbps) over 50 meter standard bandwidth 0.5±0.05 NA POF and 100 meter standard bandwidth 0.37±0.04 NA HCS fiber. The Industrial Fast Ethernet transceiver package consist of four basic elements; two optical subassemblies, an electrical subassembly and the housing.