An optical communications card is provided that has multiple parallel optical communications modules mounted on one or both sides of the card. Any of the first and second transmission members includes a projection, and the other includes a receiving port. The system includes a first and a second group of exhaust valves associated with a plurality of engine cylinders. The processor can read the stored source identifier to identify the source of an event to which the processor is to respond. Thus, the reliability and the aesthetic appearance of the flip chip package can be effectively promoted.