FAN

HP 905774-001 fan is a replacement ventilation component identified by HP for the ProBook 470 G4 Notebook PC. It helps move air through the computer to support ventilation during operation.

The electric fan is controlled by a temperature sensor and is designed to start automatically when high-temperature conditions occur. Exhaust air leaves through the computer’s left-side ventilation grille, helping direct warm air out of the chassis.

The fan connects to the system board by cable and is secured inside the computer with a screw. This is the fan component identified in HP’s service documentation, rather than a fan-and-heatsink assembly.