US Patent 10923856 Polarization feature for a receptacle cage

A receptacle connector assembly includes a receptacle cage having first and second side walls extending from a top wall to form a module channel configured to receive a pluggable module. The top wall is non-planar and has a shroud extending therefrom forming a cage polarization feature. The shroud has a first shroud side wall, a second shroud side wall and a shroud top wall forming a polarization feature channel configured to receive a polarization feature of the pluggable module.