Patent ID: 8456828

Claim:
A hard disk drive (HDD) assembly, the assembly comprising: an HDD rack comprising a front wall and two sidewalls substantially perpendicularly extending from opposite ends of the front wall, wherein a plurality of spaced fixing holes is defined in each of the sidewalls; and a dummy HDD comprising a board and a plurality of protrusions extending from opposite ends of the board; wherein the dummy HDD is accommodated among the front wall and the sidewalls, with the plurality of protrusions engaged in the corresponding fixing holes of the HDD rack, when an HDD is not mounted to the HDD rack; and wherein opposite ends of the board are U-shaped, the dummy HDD further comprises two first plates extending from opposite sides of the board and two U-shaped second plates extending up from the opposite ends of the board, the first plates and concave portions of the second plates slanting away from the board.