US Patent 7381099 Equipment door perforation penetrating connector

A door penetrating connector assembly for providing electrical connectivity through a perforated equipment rack door includes a first connector that includes first electrical contacts configured and disposed to fit through corresponding holes in the equipment rack door, and a second connector that includes second electrical contacts configured and disposed to receive and make electrical contact with the first electrical contacts, where the connectors are configured to inhibit electrical connection through the holes provided by the door, of the first and second electrical contacts if the connectors are disposed with an undesirable alignment relative to each other.