Abstract: An electrical connector includes a pin connector and a cable connector detachably fitted with each other. The cable connector includes a cable, socket contacts to be connected to conductors of the cable, a housing for holding and fixing the socket contacts therein, a cover mounted onto the housing to cover it and urging the cable against the socket contacts, and a strain-relief mounted onto the housing to cover the cover and embracing the cable with the cover therebetween. The pin connector includes pin contacts to be fitted with the socket contacts, and a block for holding and fixing the pin contacts therein. The strain-relief consists of a main body and side portions. The main body has an upper surface lower than upper surfaces of the side portions substantially by the thickness of the cable, and the upper surfaces of the side portions are substantially flush with the upper surface of the cover when the strain-relief has been mounted on the housing.