An electrical connector (100) for mating with a mating connector (800) along a mating direction includes an insulative housing (1), a pair of latches (7) and a number of terminals (5) received in the insulative housing. The insulative housing has a front face (11), a pair of side walls (13) each defining an opening (131), a pair of receiving spaces (12, 14) defined between the pair of side walls, and a partition (16) disposed between the pair of receiving spaces. The pair of latches are mounted in the openings and each formed with an engaging portion (75). The latch resiliently yields in the opening along a moving direction perpendicular to the mating direction to permit the engaging portion moveable between a locked position and an unlocked position.