RJ45 Connector 101: Everything You Want to Know – VCELINK
Redco EA-4P-MX-01 Ethernet to 4 Male XLR breakout cable, 1' | Redco Audio
Amazon.com: M12 to RJ45 4 Position D-Coded Male to RJ45 Male Shielded Cable Assembly, Waterproof M12 to RJ45 4 Pin Industrial Ethernet Cable, M12 to RJ45 ethernet Cable with PUR Jacket, 1
CAB-M12DM4-RJ45 - Industrial IP67 M12 4 pin threaded Amphenol connector cable for LAN (ITP switches)with RJ45 end 1m
ethernet - RJ45 Cable only has 4 wires - Network Engineering Stack Exchange