An electrical receptacle connector is disclosed. The electrical receptacle connector includes a plurality of upper-row receptacle terminals and lower-row receptacle terminals. The plurality of upper-row receptacle terminals and lower-row receptacle terminals have 180 degree symmetrical, dual or double orientation design which enable the electrical plug connector to be inserted into the electrical receptacle connector in either of two intuitive orientations. Each of the receptacle terminals includes a flat contact portion, a soldering portion and a connecting portion. The flat contact portion is extended from one end of the connecting portion, and the soldering portion is extended from the other end of the connecting portion. The width of the connecting portion is different from the width of the flat contact portion.