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Overview
Overview
AC power supply modules have burgundy coloring. For port-side exhaust airflow, the fan and AC power
supplies have blue coloring. You can also order the 1200-W HVAC/HVDC power supply which has
dual-direction airflow with white coloring. Dual-direction airflow modules automatically use the airflow
direction of the other modules installed in the switch.
The fan and power supply modules are field replaceable and you can replace one fan module or one power
supply module during operations so long as the other modules are installed and operating. If you have only
one power supply installed, you can install the replacement power supply in the open slot before removing
the original power supply.
Note
All of the fan and power supply modules must have the same direction of airflow. Otherwise, the switch can
overheat and shut down. If you are installing a dual-direction power supply, that module will automatically
use the same airflow direction as the other modules in the switch.
Caution
If the switch has port-side intake airflow (burgundy coloring for fan modules), you must locate the ports in
the cold aisle. If the switch has port-side exhaust airflow (blue coloring for fan modules), you must locate the
ports in the hot aisle. If you locate the air intake in a hot aisle, the switch can overheat and shut down.
Cisco Nexus 9364C NX-OS Mode Switch Hardware Installation Guide
5
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- Overview of Network Connections
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