An electrical connector includes an insulative housing defining a mating surface, a mounting surface and a plurality of passageways running through the mating surface and the mounting surface and a plurality of contacts upwardly assembled into the corresponding passageways. Each of the contacts defines an upright retention portion interfered with the passageway, a pair of elastic arms extending from the retention portion and spaced apart with each other and a lying V-shaped contacting portion formed by a distal end of each elastic arms bending and extending beyond the mating surface of the housing. Each contact defines a connecting portion connecting with the pair of elastic arms and received in the passageway.