Stacked electrical connector assembly with stable mating characteristic

An electrical connector assembly, comprising:

• an insulative housing defining a first receiving cavity, a second receiving cavity below the first receiving cavity in a front wall thereof, and a rear wall opposite to the front wall;
• a first and a second connector components received in the first and second receiving cavities, respectively;
• a holder comprising a mating portion fixed to rear wall of the insulative housing, a top and a bottom portions extending backwardly from the mating portion, an area of the top portion being smaller than that of the bottom portion;
• and
• a metal shield enclosing the insulative housing, the metal shield comprising a mating wall mating with the front wall of the insulative housing and a pair of side walls perpendicular to the mating wall, and a top edge of each side wall being shorter than a bottom edge thereof.

An electrical connector comprising:

• an insulative housing defining at least one upper level and one lower level;
• two connector ports formed at said upper level and said lower level, respectively;
• a plurality of terminals respectively disposed in said connector ports;
• and
• a metallic shell enclosing said housing at least on a top face, two side faces and a front face wherein there are at least two openings in the metallic shell in alignment with the corresponding connection ports;
• wherein
• the metallic shell defines a trapezoidal configuration with a shorter upper side and a longer bottom side from a side view, having a front vertical plane covering a front face of the housing, and a rear slanted plane covering a rear side of the housing.