An electrical connector includes an insulation body having a base portion and a tongue located at a front end of the base portion. Multiple terminals are fixed on the base portion and partially exposed from a surface of the tongue. An outer metal casing surrounds the base portion and the tongue and forms an insertion space receiving the tongue. The outer metal casing has a bottom wall and two side walls. Each side wall extends downward to form a stop wall. Each stop wall extends downward to form two soldering pins. The four soldering pins are arranged in two rows. A cushion block is located below the bottom wall and fixed on the two stop walls. Four protruding blocks are formed by protruding downward from a bottom surface of the cushion block. At least two of the protruding blocks are located disposed between the soldering pins in the two rows.