A receptacle assembly includes a receptacle cage having walls defining a cavity extending between a front and a rear and having a module channel receiving a pluggable module. The walls include a top wall, a bottom wall and first and second sidewalls extending from the top wall to the bottom wall. The cavity is open at the rear to receive a cabled receptacle connector in the module channel and the cavity is open at the front to receive the pluggable module therein. A mounting panel extends from the bottom wall and has a mounting surface below the bottom wall for supporting the bottom wall of the receptacle cage at an elevated position above the mounting surface.