A power supply connector adapted to be connected to a power supply and a mating electrical connector comprises a housing, a positive conductive terminal positioned in the housing, and a negative conductive terminal positioned in the housing. The positive conductive terminal is electrically connected to a positive wire of the power supply and a mating positive terminal of the mating electrical connector. The positive conductive terminal is positioned between a first surface of a tongue of the housing and a first inner wall of the housing. The negative conductive terminal is electrically connected to a negative wire of the power supply and a mating negative terminal of the mating electrical connector. The negative conductive terminal is positioned between a second surface of the tongue and a second inner wall of the housing.