Amazon.com: ASI ASI-M12-RJ45-11103 M12 3 Meter M12 to RJ45 ethernet Cable with a M12 4-pin Connector D-Coded Male to RJ45 Male Shielded Cable Assembly, Cat5e SFTP 24 AWG with Black PUR Jacket,
Alvin's Cables M12 4 Pin to RJ45 Industrial Ethernet Cable 4 Position