A communication system includes a plug module having a plug housing and a plug latch and a receptacle module having a receptacle housing and a receptacle latch. The receptacle module includes a receptacle connector with a card slot receiving a plug module circuit board. The receptacle connector includes cables terminated to contacts and extending from the receptacle connector. A receptacle cage includes a front cage interface receiving the plug module and a rear cage interface receiving the receptacle module. The front cage interface matches the rear cage interface including a front latching feature and a rear latching feature interfacing with the plug and receptacle latches.