In the related art refrigerator, its structure for supplying water to a dispenser and water tank was complicated. The floating gate includes a portion of a metal one layer and the dielectric one layer includes a first high-k dielectric material. The housing presents a latching means to engage with the first electrical device to retain the first electrical device with the housing in a direction which extends parallel to the direction of compressive engagement to thereby hold the plurality of conductive pads of the first electrical device in physical contact with respective the first regions of the conductive elements.