An electrical connector assembly (100), comprising: an insulative housing (1) having at least one receiving space formed therein; a latch (3) formed on a top surface of the insulative housing, the latch defining a front end connected to the top surface and a rear end cantilevered from the front end; and two PCB modules (2) received into each receiving space (11), one of the two PCB modules defining a holding portion (231) holding the rear end of the latch.