SFP Port - What is it and what is it used for? » Roger Perkin
Startech Fiber Media Converter with Open SFP Slot 黒 | Techinn
Gigabit Media Converter 1 Port Sfp To 2 Rj45 Gigabit Optical Fiber Gpon/epon Olt Ethernet For Ip Camera 10/100/1000m - Fiber Optic Equipment - AliExpress
SFP media converter, 1Gb RJ-45/SFP slot 1Gb (Wave Optics, WO-KG-SFP)
What is an SFP (Small Form Factor Pluggable) Port?