A pluggable module system includes an electrical connector assembly having a cage member with a plurality of walls defining a receptacle. The cage member has an opening in a front thereof providing access to the receptacle and a latch proximate to the opening. A receptacle connector is received in the cage member proximate to a rear thereof and is accessible in the receptacle. A pluggable module is received in the receptacle and is mated to the receptacle connector. The pluggable module has a conductive shell and a retention post that extends from the conductive shell. The retention post engages the latch to secure the pluggable module in the receptacle. The conductive shell has grounding tabs that extend from the shell. The grounding tabs circumferentially surround the conductive shell.