Patent ID: 8081490

Claim:
An apparatus comprising: a motherboard defining a mounting aperture and a securing hole therein, the mounting aperture comprising a large hole and a small hole communicating with the large hole; and a computer chassis comprising: a bottom plate defining a screw hole corresponding to the securing hole of the motherboard; a first convex projection formed on the bottom plate, a hollow pillar formed on the first convex projection, the pillar defining a through hole extending through the pillar and the first convex projection, a blind rivet mounted in the through hole, the blind rivet comprising a cap located above the pillar, the cap has an area larger than the small hole; wherein the motherboard is slidable between a first position and a second position; in the first position the motherboard is located on the first convex projection, the pillar extends in the large hole and the cap is positioned above the motherboard; in the second position the pillar is located in the small hole, the cap is misaligned with the large hole, the securing hole of the motherboard is aligned with the screw hole of the bottom plate.