Patent ID: 7826221

Claim:
An apparatus comprising: a motherboard defining a rotating hole, a clasp hole, and a through hole, the clasp hole comprising a clasp slot and an arcuate groove communicating with clasp slot; and a computer chassis comprising: a bottom plate; a first convex projection formed on the bottom plate, a rotating shaft formed on the first convex projection; a second convex projection formed on the bottom plate, a mounting hole defined in the second convex projection; and a third convex projection formed on the bottom plate, a clasp formed on the third convex projection, the clasp comprising a root connected with the third convex projection, and a bent portion formed on a free end of the root; wherein the motherboard is rotatable between a first and a second position, in the first position the motherboard is located on the first, second, and third convex projections, the rotating shaft of the first convex projection is located in the rotating hole, the bent portion of the clasp extends through the clasp slot with the root remained in the clasp slot and aligned with the arcuate groove; in the second position the root of the clasp is located in the arcuate groove, the bent portion of the clasp is misaligned with the clasp slot to restrict the motherboard on the third convex projection, the though hole of the motherboard is aligned with the mounting hole of the second convex projection.