Electrical connector assembly with latching metal ears

An electrical connector assembly for connecting a first printed circuit board to a second printed circuit board, comprising:

• a plug connector comprising a first insulative housing having a pair of longitudinal sidewalls and a pair of transverse sidewalls, a plurality of first teminals received in the longitudinal sidewalls, and a pair of first metal ears attached on the transverse sidewalls, one of the first metal ears having an upwardly extending first metal latch;
• and
• a receptacle connector engaged with the plug connector, the receptacle connector comprising a second insulative housing having a base and a tongue protruding downwardly from the base, the tongue being received between the pair of longitudinal sidewalls of the first insulative housing, a plurality of second terminals retained on the tongue, and a pair of second metal ears attached on opposite ends of the base, one of the second metal ears having a second metal latch engaged with the first metal latch;
• wherein
• the first insulative housing has a first flange formed on each transverse sidewall, the first flange comprising a recess defined in an outer side thereof and a pair of elongated blocks projecting into the recess, and wherein the first metal ear is received in the recess of the first flange and engages with the elongated blocks;
• wherein
• the first metal ear comprises a first horizontal soldering portion and a first base portion perpendicular to each other, the first metal latch having a flat portion extending upwardly from the first base port;
• wherein
• the first horizontal soldering portion comprises an upwardly and outwardly bent arm at each end thereof;
• wherein
• the first flat portion of the first metal latch comprises an outer inclined surface at an upper and thereof.