An electrical connector includes an insulative housing, a plurality of first and second terminals. The insulative housing includes a rear base portion and a front tongue portion. Each first terminal defines a first retained portion retaining in the insulative housing, a first contacting portion at a second mating surface of the tongue portion, and a first solder portion extending from the insulative housing. Each second terminal defines a second connecting portion retaining in the insulative housing, a second contacting portion at a second mating surface of the tongue portion, and a second solder portion. Wherein one terminal of first terminals located adjacent to a lateral surface of the tongue portion defines an elastic contacting arm integrally extends from the first retained portion. The contacting arm defines an outward-tip projecting outwards from the lateral side of the tongue portion so as to provide a detect pin without any soldering portion.