An electrical connector assembly, adapted for electrically connecting an IC package to a printed circuit board, includes a first housing used for soldering on the printed circuit board and a frame surrounding the first housing. The first housing includes a longitudinal body and a protrusion projecting forwardly from the body. The frame defines a base and two supporting arms extending from two ends of the base, each supporting arm defines a latching bent from a top edge of a free end thereof for locking the protrusion of the first housing. The electrical connector assembly includes a longitudinal holding member, the holding member has two ends respectively connecting to the free ends of said two supporting arms so that the dimension of the opening formed between the free ends of said two supporting arms is fixed.