An electrical connector (100) for connecting an electronic module (8) with a printed circuit board includes an insulative housing (1) defining a receiving space (12), a number of contacts (2) received in the housing and a cover (3) attached to the housing. The housing forms a base (10) and a pair of lateral walls (11) extending from the base. Each lateral wall has an end portion (112) away from and opposite to the base. The cover is assembled to the end portions of the lateral walls of the housing and is capable of moving from an unlocking position to a locking position. The connector also has a pair of metal ears (5) retained in the housing and can be driven to move into the receiving space and abut against the electronic module when the connector is in the locking position.