Patent ID: 8070525

Claim:
An electrical connector assembly, comprising: an insulative housing with a plurality of terminal passages; a plurality of contacts received in the corresponding terminal passages; and a shell enclosing the insulative housing, and having a top shell and a bottom shell assembled with each other, the bottom shell comprising a frame-shaped base portion and an extension portion extending backwards and bent downwards from the base portion, the base portion defining a top wall, a bottom wall and a pair of side walls connecting with the top wall and the bottom wall, the extension portion having a bottom surface lower than the bottom wall of the base portion and a pair of side portions bent upwards from lateral edges of the bottom surface, the side walls of the base portion and the side portions of the extension portion having a locking mechanism engaging the base portion with the extension portion; wherein each side walls of the base portion defines a first and a second projection extending upwards and an aperture defined between the first projection and the second projection, and the side portions of the extension portion define another aperture and another projection, the projections on the base portion are accommodated in the apertures in the extension portion, and the projections on the extension portion are received in the apertures in the base portion to form the locking mechanism, the first projection and the second projection have the different heights with each other, and the first projection is higher than the second projection and located in front of the second projection.