Patent ID: 8665588

Claim:
A fastening device for a hard disk drive (HDD), comprising: a bottom plate, two protrusions protruding up from the bottom plate, a positioning portion formed on the bottom plate, the positioning portion and the bottom plate bounding a through hole; and two fastening members each comprising a sidewall, and a top wall and a bottom wall perpendicularly extending from top and bottom sides of the sidewall, the top walls fastened to a bottom of the HDD, each bottom wall defining an engaging hole, the engaging hole comprising a large first hole through which a corresponding protrusion extends, and a small second hole communicating with the first hole to allow the protrusion to enter from the first hole, a positioning tab extending from one of the fastening members to extend through the through hole, a block formed on the positioning tab to engage with the positioning portion, and a slanting guiding surface formed on a top of the block, wherein the slanting guiding surface guides the block to pass through the through hole.