present invention in detail wherein depicted elements are not necessarily shown to scale and wherein like or similar elements are designated by same or similar reference numeral through the several views and same or similar terminology referring to fig1 5 an electrical connector 100 for soldering to a circuit board 200 according to a first embodiment in the present invention is an usb 3 0 b type receptacle connector which can mate with a standard usb 3 0 b type plug not shown or a standard usb 2 0 b type plug not shown the electrical connector 100 comprises an insulative housing 1 a plurality of contacts 2 attached to the insulative housing 1 and a metal shell 3 covering the insulative housing 1 the insulative housing 1 comprises a first housing 11 a second housing 12 and a spacer 13 assembled together the first housing 11 defines a mating port 14 for receiving the usb 3 0 or usb 2 0 b type plug the mating port 14 has a first receiving cavity 141 and a second receiving cavity 142 located upper the first receiving cavity 141 the second receiving cavity 142 communicates with the first receiving cavity 141 in an up to down direction and is essentially narrower than the first receiving cavity 141 the first housing 11 has a first base portion 15 and a first tongue 16 integrally extending into the first receiving cavity 141 the first base portion 15 defines two pairs of passageways 150 extending therethrough along an insertion direction of the plug the first tongue 16 has a pair of.