An electrical connector includes an insulative housing formed with a rear base and a front mating tongue, a metallic shell covering the insulative housing thereby defining a mating cavity, contacts, and a first and a second detecting pin. The mating tongue defines a first and a second face and two lateral sides between the first and second faces. The contacts include contacting portions located on the first face. Each of the first and the second detecting pins forwardly protrude and has a contacting portion located in the mating cavity. The contacting portion of the first detecting pin is located behind that of the second detecting pin in the insertion direction. The contacting portion of the first detecting pin is located along and space from one of the lateral sides, the contacting portion of the second detecting pin is located in the second face of the mating tongue.