An electrical receptacle connector includes an insulative housing forming a pair of receiving slots, two pairs of contacts are retained in the housing and located by two sides of the corresponding receiving slots, respectively. Each contact has a frame having four sides with a pair of first spring arms extending from two opposite sides toward each other and extending into the receiving slot with the corresponding contact points at different levels. A second spring arm extends from another side into the receiving slot. A deflection direction of the first spring arms is perpendicular to that of the second spring arm, and the first spring arms contact one side of the blade type contact of the plug connector and the second spring arm contacts another side of the blade type contact of the plug connector.