TP-Link FC311B-20 Transceiver/Media Converter

2 Port(s) - 1 x Network (RJ-45) - 1 x SC - Duplex SC Port - Twisted Pair, Optical Fiber - Single-mode - 1310 nm, 1550 nm Fiber - Gigabit Ethernet - 10/100/1000Base-T, 100Base-TX, 1000Base-TX - 1000 Mbit/s - 20 km - Standalone, Rack-mountable