Patent ID: 7013088

Claim:
A fiber optic module slideable into and out of a cage with a slot, which is mounted on a host printed circuit board of a system chassis, for transmitting and/or receiving data, the fiber optic module comprising: a printed circuit board having high frequency electrical components mounted to a first surface, a pluggable electrical connector extending therefrom for insertion and removal from a corresponding electrical connector on the host printed circuit board, and a first ground plane formed on the first surface near a first edge; a plurality of fiber optic receptacles, the plurality of fiber optic receptacles coupled to the printed circuit board in parallel; and an electromagnetic interference shield coupled to the first ground plane of the printed circuit board, thereby covering the high frequency electrical components mounted to the first surface, and thereby forming a first guide rail out of the first edge of the printed circuit board; wherein the first guide rail is for sliding along the cage slot during insertion and removal of the pluggable electrical connector into and from the corresponding electrical connector, and for shunting electromagnetic fields from the electromagnetic interference shield, through the first guide rail and the cage slot to a ground of the system chassis.