TP-Link WDM Fast Ethernet Media Converter, Up to 100Mbps RJ45 to 100M Single-Mode SC Fiber, 1550nm Transfer Data and 1310nm Receive Data (MC111CS) Complies with 802.3u 10/100Base-TX, 100Base-FX standards Link Fault Passthrough and Far End Fault minimize the loss caused by link failure timely Adopts WDM technology, transmitting and receiving data on one single fiber