Receptacle connector and plug connector for a communication system

A communication system comprising:

• a receptacle connector including a contact assembly and a receptacle connector housing holding the contact assembly, the contact assembly including receptacle contacts arranged in an upper array and a lower array, the receptacle contacts including spring beams at mating ends of the receptacle contacts, the contact assembly including contact holders holding the receptacle contacts in the upper array and the lower array, the receptacle connector housing including a front housing and an inner housing receiving the contact holders and the receptacle contacts, the front housing including a top wall and a bottom wall forming a cavity therebetween, the front housing including a card slot at a front of the receptacle connector housing, the inner housing being received in the cavity of the front housing to position the mating ends of the receptacle contacts at the card slot, the front housing retaining the contact holders in the inner housing, the front housing including a housing latch securing the inner housing in the front housing, the receptacle connector housing having guide pockets at the front, wherein the receptacle connector housing includes a height profile defined between the top wall and the bottom wall, the housing latch being contained within the height profile, the inner housing being contained within the height profile, the guide pockets being contained within the height profile;
• and
• a plug connector mated with the receptacle connector, the plug connector including a plug connector housing having an upper wall, a lower wall and side walls between the upper and lower walls forming a cavity, the cavity receives a cable assembly of the plug connector, the cable assembly having cables electrically connected to a circuit card, the circuit card having a card edge and plug contacts proximate to the card edge, the circuit card being received in the card slot of the receptacle connector to mate the plug contacts with the receptacle contacts, the plug connector housing includes alignment embossments extending forward from the side walls, the alignment embossments being received in the guide pockets of the receptacle connector to align the plug connector with the receptacle connector prior to loading the circuit card in the card slot, the plug connector including latches coupled to the alignment embossments being latchably coupled to the receptacle connector, wherein the latches are contained within a height profile of the plug connector housing defined between the upper wall and the lower wall of the plug connector housing.