An electrical receptacle connector includes a metallic shell, an insulated housing, a plurality of first receptacle terminals, a plurality of second receptacle terminals, and a rear cover plate. The insulated housing is received in the receiving cavity. The first receptacle terminals and the second receptacle terminals are respectively disposed at an upper portion and a lower portion of the insulated housing. The rear cover plate includes a baffle plate and one or more hole. The hole is formed on the surface of the baffle plate for checking tail portions of the second receptacle terminals which are formed as SMT (surface mount technology) legs. Accordingly, the soldering condition between the tail portions of the second receptacle terminals and contacts of a circuit board can be checked from the hole.