A daughter card assembly is proved that includes a circuit board having a leading edge and a board surface that extends to the leading edge. The daughter card assembly also includes a guide element that is mounted to the board surface of the circuit board. The guide element includes a wall portion that is mounted to the board surface and a receptacle arm. The receptacle arm extends from the wall portion generally parallel to, and spaced apart from, the board surface in a mating direction. The receptacle arm and the board surface define a connector-receiving space therebetween. The daughter card assembly also includes an electrical connector that is coupled to the circuit board and disposed in the connector-receiving space. The receptacle arm engages an alignment module associated with a mating connector as the electrical connector moves in the mating direction.