8P8C RJ45 Jack for Board-Edge Ethernet
The 5555167-1: A keying feature prevents insertion of a non-matching plug.
Board Lock and Keying for Vibration Environments
The board lock on the 5555167-1 holds the jack in place during the solder process and adds mechanical retention once the board is in service — useful in equipment subject to shock or cable tug. The keying feature prevents inserting an RJ45 plug that does not match the key profile, reducing the chance of wiring errors in multi-port panels.