Processor dedicated to input/output operations.

Motor assembly rotating hard-drive platters.

Sensor measuring temperature.

Sensor detecting movement or position of a hinge.

Register used to communicate with hardware I/O.

Specialized hardware speeding specific computations.

Material protecting components from excessive heat.

Physical hardware used for human-machine interaction.

Cache implemented using physical memory circuitry.

Thermally conductive pad transferring heat between surfaces.