An electrical connector for non-USB protocol includes an insulative tongue plate portion and a vertical portion extending perpendicularly from a lateral edge of the tongue plate portion. The width of the tongue plate portion extending along a transverse direction is much shorter than what of a corresponding standard USB connector. The thickness of the tongue plate portion extending in a vertical direction perpendicular to the transverse direction is the same as what of a corresponding standard USB connector. Under this circumstance, tongue plate portion and the vertical portion can be easily manufactured by a little improvement of the existing USB mold.