Abstract: To substantially prevent debris from entering the internal volume of a dome switch, the dome switch can be configured to include limited or no external vents. However, to ensure that the air can be displaced and to avoid an excessively high pressure underneath the dome with the dome is inverted, the dome switch can include one or more internal regions for receiving the displaced air. In particular, the dome switch may include one or more integrated reservoirs. For example, the integrated reservoirs can be placed in a layer between a film placed over the dome and a circuit board on which the dome is placed. As another example, the integrated reservoirs can be constructed out of the plane of the circuit board.

Abstract: An electronics assembly, for example a computer that may be employed as a network server, has an enclosure, and a plurality of heat-generating components such as microprocessors located inside the enclosure. One or more fans may be provided for maintaining a through flow of air for cooling the components of the assembly. The heat-generating components are located within the enclosure in line with the direction of the flow of air, and the heat-sinks have a configuration such that the air flows over them in parallel. The heat-sinks may each have a flat base for mounting on the component, and a cantilevered portion having one end located on the base, and another end that extends beyond the base and over the base of the other heat-sink, but not in contact with it.