Perle CM-100-S2ST20 Fast Ethernet Media Converter - 1 x Network (RJ-45) - 1 x ST Ports - 10/100Base-TX, 100Base-LX - 12.43 Mile - Internal

With 10/100Base-TX technology get up to 100Mbps data transfer rate over optical fiber cable The Internal provides convenient installation Attach multiple devices together or expand the number of devices connected to your existing network by using 2 transceiver/media converter