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Overview
Note
The limit for USB support is USB 2.0 devices that use less than 2.5 W (less than 0.5 A inclusive of surge
current). Devices, such as external hard drives, that instantaneously draw more than 0.5 A are not supported.
Depending on whether you plan to position the ports in a hot or cold aisle, you can order the fan and power
supply modules with port-side intake (burgundy colored) or port-side exhaust (blue colored) airflow. The
power supply and fan modules must have the same coloring.
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 operating. If you have only one power
supply that is installed, you can install the replacement power supply in the open slot before removing the
original power supply.
Note
The fan and power supply modules must have the same direction of airflow. Otherwise, the switch can overheat
and shut down.
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 9332C ACI-Mode Switch Hardware Installation Guide
4
Overview
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