8 Port RJ45 Modular Connectors Ethernet Connectors

rj45 slot   Dan lightning gems slot

Serial port RJ45 is nice if you want to run the connection through a patch bay to a port somewhere else in the building Just don't run it

Baseus Lite Series RJ45 Lan Port Ethernet Adapter  Baseus Lite Series RJ45 Lan Port Ethernet Adapter

potion commotion slot LFC-1002-SFP is a two RJ45 copper Gigabit Ethernet ports media converter with 1001000Base-X speed SFP optical slot, auto-negotiating 101001000Base-TX, Smart Keeper RJ45 Port Lock The Smart Keeper RJ45 Port Lock is a physical cybersecurity device that prevents unauthorized connection to an unused RJ45