Airflow Direction Requirements

All installed power supplies must blow air in the same direction and must match the airflow direction of the installed fan modules.

• If the power supply has a red tab, the airflow is front-to-back. Use a power supply labeled Air Out.
• If the power supply has a blue tab, the airflow is back-to-front. Use a power supply labeled Air In.

Note

The operating-system software cannot display the airflow direction.