Removable dust filter attached magnetically.

Number of fins per unit area.

PSU with detachable power cables.

Perforated enclosure panel allowing airflow.

Surface of a heatsink contacting the heat source.

PSU with permanently attached cables.

Open grille designed to permit airflow.

Hardware converting AC power into regulated DC power.

PSU with some detachable and some fixed cables.

Highest temperature detected within a component.