A USB memory device includes a circuit board, a connector, and a one-piece housing. The circuit board includes opposed major faces having a plurality of electrical contacts and a memory chip disposed on one of the major faces. The USB connector is coupled to a first end of the circuit board. The one-piece housing is over-molded over the circuit board and a portion of the connector, such that an interior of the one-piece housing contacts an entirety of the opposed major faces including the plurality of electrical contacts and the memory chip.