A connector having a sliding cam that prevents twisting when mating with a mating connector. The connector having an inner housing, an inner housing, a slider receiving slot, and a slider. The inner housing includes a contact positioned in the inner housing, while the outer housing is attached to the inner housing. The slider receiving slot is positioned in the outer housing, and the slider includes a plurality of multiple cam grooves with cam pin insertion openings into which a plurality of cam pins positioned along a side surface of a mating connector are inserted. The slider is slidably received in the slider receiving slot. A plurality of temporary mating projections are positioned along the cam pin insertion openings, wherein a height of one of the plurality of temporary mating projections is higher than a height of another of the plurality of temporary mating projections.