A Hardware Attached on Top (HAT) is an add-on board for single-board computers with a specific design for connectivity.

Header pins are conductive metal rods used for interconnecting circuit boards or electronic components.

A heat gun is an electrical device that emits a stream of hot air, typically ranging from 100°C to 550°C (212°F to 1022°F).

A thermoplastic tube that shrinks in diameter when heated to fit snugly over wires or connections.

A process of applying heat to shrink thermoplastic materials tightly around an object.

The hot-end is the component of a 3D printer that melts the filament for extrusion.

A mechanical device used for data storage, utilizing spinning disks coated with magnetic material.

HDMI (High-Definition Multimedia Interface) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data.

A heat sink is a passive heat exchanger that transfers thermal energy from a higher temperature device to a lower temperature fluid medium.