StarTech Gigabit Ethernet Multi Mode Fiber Media Converter SC 550m, 1000 Mbps

This Gigabit Ethernet to MM Fiber converter lets you extend a Gigabit Ethernet network over single mode fiber, at distances up to 550m (1804ft). The GbE/Fiber converter transparently converts 1000Base-T Ethernet into 1000Base-LX/SX optical.