Abstract: A circuit board structure includes a first sub-circuit board, a second sub-circuit board, and a third sub-circuit board. The first sub-circuit board has an upper surface and a lower surface opposite to each other, and includes at least one first conductive through hole. The second sub-circuit board is disposed on the upper surface of the first sub-circuit board and includes at least one second conductive through hole. The third sub-circuit board is disposed on the lower surface of the first sub-circuit board and includes at least one third conductive through hole. At least two of the first conductive through hole, the second conductive through hole, and the third conductive through hole are alternately arranged in an axial direction perpendicular to an extending direction of the first sub-circuit board. The first, second and third sub-circuit boards are electrically connected to one another.

Abstract: A multiple optical disc storage case includes a upper cover, a lower supporting plate, an outer fastener, and a plurality of inner hooks. The upper cover is hollow, and the lower supporting plate is used to assemble with the upper cover. The outer fastener is positioned at one of the upper cover and a lower supporting plate, and has at least one outer hook, at least one stop block and a plurality of resilient block. The outer hooks and the stop blocks are positioned at one side of the outer fastener, and the resilient blocks are equally separated and positioned at the other side of the outer fastener. The outer fastener also has a plurality of inner hooks positioned at the other of the upper case and the lower supporting plate so that the inner hooks are hooked up with the outer hooks.

Abstract: A disc box structure according to the present invention includes a shell and an auxiliary support. The shell has a base, and a stand protruding upwardly from the base for accommodating a disc. The auxiliary support includes a pivot connected to the base, a lateral arm arranged to a side of the pivot, a pressing portion disposed over the lateral arm, and a stand connected to an opposite side of the pivot. Therefore, the pressing portion is pressed down to release the disc in order to lift the auxiliary support upwards, so that the disc is raised for easy removal.