An electrical receptacle connector includes an insulated member received in a metallic shell. First and second receptacle terminals are held in the insulated member. A shielding plate is between the first and second receptacle terminals. The metallic shell includes a shell body and a contact arm. The metallic shell includes a receptacle cavity for receiving the insulated member. The contact arm includes a supporting portion extending outward from the shell body, and a plurality of contact surfaces extending from the supporting portion. The contact arm is in contact with an inner wall of a housing of an electronic device, and the contact surfaces are conducted with the inner wall of the housing of the electronic device, thereby improving the performance of electromagnetic compatibility.