Patent ID: 8154879
Filing Date: 2012-04-10
Classification: H05K

Abstract:
1. A motherboard comprising: a printed circuit board defining a plurality of securing holes; and a first chip and a second chip arranged on the printed circuit board; wherein the plurality of securing holes defined in the printed circuit board surround the first chip, for securing a heat dissipating module on the first chip by fasteners; the plurality of securing holes comprises a first securing hole and a second securing hole located between the first chip and the second chip; a first line is defined by the first securing hole and the second securing hole; the printed circuit board comprises at least one isolating hole located in a second line, determined by one corner of the second chip closest to the first chip and the first securing hole, and the isolating hole is located between the one corner and the first securing hole; and a first diagonal line, determined by a first pair of diagonally opposed corners of the second chip, is perpendicular to the first line, and a second diagonal line, determined by a second pair of diagonally opposed corners of the second chip, is parallel to the first line; and wherein the plurality of securing holes comprise four securing holes arranged in a rectangular shape, the four securing holes comprise the first securing hole, the second securing hole, a third securing hole, and a fourth securing hole, the first securing hole and the third securing hole determine a third line perpendicular to the first line, and the second securing hole and the fourth securing hole determine a fourth line parallel to the third line.