An electrical connector assembly (100), comprises: a housing (1) having a receiving room (11) therein communicated with an exterior along a longitudinal direction and defining a receiving cavity (14) formed on a top surface thereof. A pair of supporting posts (143) are formed in the receiving cavity. Two paralleled printed circuit boards (2) are received into the receiving room and positioned in the housing. A latching member (6) is located in the receiving cavity and engaged with the housing. A pulling member (7) is supported by the top surface of the housing and having a front portion extending into the receiving cavity and interconnected with the latching member. The pulling member defines a curving portion (722) supported by the pair of supporting posts.