M55302/117-07 is an external keying hardware accessory designed for use with .050, .075, and .100 box connectors. This accessory is compatible with 2-row receptacle assemblies, 2-row straddle mount receptacle assemblies, and 4-row receptacle assemblies. The product is EU RoHS/ELW compliant, ensuring environmental compliance for electronic applications. It is supplied in kit packaging method for convenient installation and integration into connector systems.