An electrical connector assembly (100) comprises: a housing (1) comprising a first shield part (15), a second shield part (16) assembled with each other; at least one printed circuit board (2) disposed in the housing; a strain relief (5) disposed in the housing and sandwiched by the first shield part and the second shield part; a metallic shell (8) engaged with the housing; a pair of first screws (91) assembled to the housing along two opposite directions and interlocked with first shield part, the second shield part and the strain relief; and a pair of second screws (92) assembled to the housing along a same direction and interlocked the first shield part, the second shield part, the strain relief and the metallic shell.