If your device does not come with an installed internal power supply, you can install one or two power supplies. 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.
If the power supply has a blue tab, the airflow is back-to-front.
The following 1600 W AC or DC internal power supply units (PSUs) are available for the switch:
Part numbers XN-ACPWR-1600W-FB-A and XN-ACPWR-1600W-BF-A provide front-to-back airflow for cooling and 1600 W AC or DC power, respectively.
Part numbers XN-DCPWR-1600W-FB-A and XN-DCPWR-1600W-BF-A provide back-to-front airflow for cooling and 1600 W AC or DC power supply, respectively.
