All five installed fanmodules must be of the same model, so that they all direct the airflow in the same direction. Twopower supply bays accommodate either AC or DC power supplies. Power supplies have integratedcooling fans that operate independently of the switch fans. Like the fan modules, the power suppliesare available in models with either front-to-back or back-to-front cooling airflow
Air must flow in the same direction for all installed fan modules and power supplies in a switch.
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