US Patent 9391407 Electrical connector assembly having stepped surface

An electrical connector assembly includes a cage member having a plurality of walls defining a port configured to receive a pluggable module therein through a front end of the cage member. The pluggable module is configured to be electrically connected to a communication connector housed within the cage member at a rear end of the cage member. The walls are manufactured from a metal material and provide electrical shielding for the pluggable module and the communication connector. The walls include side walls and a top wall between the side walls. The top wall is non-planar and includes an upper step and a lower step. The lower step is aligned above the communication connector at or near the rear end and the upper step is aligned above the pluggable module at or near the front end.