10/100M RJ45 to 100M single-mode SC fiber Converter, Full-duplex,up to 20Km, switching power adapter, chassis mountable, Full-duplex up to 20Km switching power adapter chassis mountable. 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. Provides switch configuration of Half-Duplex / Full-Duplex transfer mode for FX port.