M12 D-code 4pin Male to RJ45 Cable Assembly, Cat5e TPE 24AWG Shielded | TE Connectivity
Amazon.com: HangTon M12 4 Pin D-Coded Male to RJ45 Ethernet Cat5e Network Cable for Industrial Vision System PoE Automation High Flex Shielded Green 1m : Electronics
ethernet - RJ45 Cable only has 4 wires - Network Engineering Stack Exchange