What is an SFP (Small Form Factor Pluggable) Port?
Amazon.com: TP-Link Gigabit SFP to RJ45 Fiber Media Converter, Fiber to Ethernet Converter 10/100/1000Mbps RJ45 Port to 1000Base-SX Multi-Mode Fiber (MC200CM) Black : Electronics
SFP-VDSL2 Modem for Long Range Ethernet Solution
4-port Outdoor POE Switch with SFP - YouTube
What is SFP Port? Everything You Need to Know - Optcore