A connector assembly includes a receptacle connector and a plug connector. The plug insulative housing includes a body portion having a mating surface, a number of cavities extending through the mating surface and a number of contact-receiving slots. The number of male contacts are divided into groups each of which includes two male contacts in parallel relationship. Each male contact includes a contacting portion residing in corresponding cavity, a mounting portion perpendicular to the contacting portion and an inclined portion connecting the contact portion and the mounting portion. In each group, a distance between the contacting portions is larger than a gap between the inclined portions, and the gap between the inclined portions is no less than a gap between the mounting portions.