Patent ID: 7443682

Claim:
A computer system, comprising: a chassis comprising a plate having at least one positioning post extending upwardly therefrom; a securing panel with a plurality of screw boles mounted on the plate, the securing panel defining at least one positioning hole for the at least one positioning post extending therethrough; a motherboard placed on the securing panel and secured with the chassis, the motherboard comprising a plurality of through holes corresponding to the plurality of screw holes of the securing panel and an electronic component located among the through holes; and a heat sink with a plurality of fastening bolts placed on the electronic component, the fastening bolts screwed into the through holes of the motherboard and the screw holes of the securing panel respectively to fasten the securing panel and the heat sink at opposite sides of the motherboard; wherein the securing panel comprises at least one concave portion with the at least one positioning hole defined therein, the at least one positioning post entering into the at least one positioning hole.