TP-Link Media conv. 1000BASE-SX

TP-Link - SM311LM - Gigabit SFP module, Multi-mode, MiniGBIC, LC interface, Up to 550/275m distance

TP-Link - MC220L - Omada 1000Mbps RJ45 to 1000Mbps SFP slot supporting MiniGBIC modules, switching power adapter, chassis TL-MC1400 rack-mountable

TP-Link - SM311LS - Gigabit SFP module, Single-mode, MiniGBIC, LC interface, Up to 10km distance