There are provided a housing having a fitting section to fit a mating connector therein; a terminal that can contact with the mating connector fitted in the fitting section; a shielding plate that covers an outer portion of the housing; and a grounding spring that is provided in the fitting section of the housing and is electrically isolated from the shielding plate. The grounding spring has a contact section to contact with the mating connector fitted in the fitting section, and a grounding section to connect to the ground. The shielding plate has a grounding section to connect to ground. There may be further provided a current shielding member between the grounding section of the grounding spring of the receptacle connector and the ground.