Patent ID: 8757575

Claim:
A fixing device for circuit boards with different thickness, the fixing device comprising: a base board defining a fixing hole; a post comprising a first threaded portion and a second threaded portion to be selectively screwed in the fixing hole of the base board, a threaded hole defined in each of the first and second threaded portions, wherein the lengths of the first and the second portions are different, and a circuit board is to be supported on a distal end of one of the first and second threaded portions that is not to be screwed in the fixing hole; and a fastener to extend through the circuit board and engage in the threaded hole of said one of the first and second threaded portions that is not to be screwed in the fixing hole; wherein the different lengths of the first and second threaded portions compensate different thicknesses of circuit boards, to maintain top surfaces of the circuit boards of different thicknesses at a same height relative to the base board.