A plug connector comprises: a housing and a releasing mechanism mounted on the housing and comprising a pulling portion and a latching member, the latching member defining a latching portion for latching a complementary connector, the pulling portion having a groove and the latching member having an ear portion engaged with the groove, the ear portion being able to rise out of the groove in response to a rearward movement of the pulling portion to move the latching portion from a latched position to a released position.