ELECTRICAL CONNECTOR ASSEMBLY HAVING IMPROVED LOCKING ELEMENTS

A board connector includes a first housing including a base and two sidewalls and defining a receiving space, a plurality of first terminals and a first metallic shell including a first main portion and two extending portions extending from the first main portion and fitting covering outsides of the sidewalls. Each extending portion defines a locking hole. A cable connector includes a second housing, a plurality of second terminals and a second metallic shell comprising a second main portion covering a top of the second insulating housing and a pair of locking arms extending from the second main portion in the lateral direction. Each sidewall is sandwiched between the locking arm and an outside of the second housing and each locking arm is retained in the locking hole during the cable connector is engaged with the board connector.