A card edge connector includes an insultive housing, a plurality of conductive terminals retained in the insultive housing and a metal frame retained in the insultive housing. The insultive housing defines two sidewalls extending along a longitudinal direction and two endwalls connected to the longitudinal ends of the sidewalls. The metal frame is integrally formed in the insulative housing and defines an elongated flat portion and a pair of fixing portions extending downwardly from both longitudinal ends of the flat portion, the flat portion is embedded into an upper portion of the insulative housing.