This is a media converter that converts a 10/100Base-TX(RJ-45) to 100Base-BXD(SC) via a 1550nm/1310nm bi-directional (BiDi) single-mode fiber (SMF) ST connector, which allows distance reach up to 40km. This provides a cost effective conversion from 10/100Base-TX(RJ-45) to 100Base-BXD fiber, while extending the network reach beyond the 100m reach limitation of copper. Our media converters are 100% compliant for all of our networking needs. Now you have a cost effective solution to your network upgrade needs.