TP-LINK (TL-FC111B-20) 10/100 Mbps WDM Media Converter

TP-LINK (TL-FC111B-20) 10/100 Mbps WDM Media Converter, up to 20km, 802.3u 10/100Base-TX, 100Base-FX, Single-Mode, Half-Duplex/Full-Duplex