Patent ID: 7313331

Claim:
An optical communication device comprising: a motherboard; and a housing provided with heat sinks and mounted on the motherboard, the housing having disposed therein: a first printed circuit board with a first electronic component mounted thereon; a second printed circuit board with a second electronic component mounted thereon; an electric connector which connects between said motherboard and said first printed circuit board; and an engagement member which electrically interconnects between said first and second printed circuit boards, wherein said second printed circuit board is disposed substantially parallel with said first printed circuit board at a position between a top surface of said housing and said first printed circuit board, wherein said second printed circuit board includes a first portion that partially overlaps with and is separated from said first printed circuit board and a second portion that does not overlap with said first printed circuit board, said second electronic component being mounted in said second portion, said second electronic component having a height greater than the separation distance between said first printed circuit board and said second printed circuit board.