Cisco Nexus 93180LC-EX Hardware Installation Manual page 13

Overview
2 Four fan modules with fan slot 1 on the left and
fan slot 4 on the right
3 Console port (RS-232 port)
4 Management port (RJ-45 port)
5 Chassis LEDs (Beacon [BCN] and Status [STS])
Note USB support is limited to 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 or port-side exhaust airflow. To determine the airflow direction of the
modules installed in your switch, see the following table.
Replaceable Modules
Fans
AC power supplies
HVAC/HVDC power supplies
DC power supplies
The fan and power supply modules are field replaceable. 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 that is installed, you can install the replacement power supply in the open slot before removing
the original power supply.
Note
All 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 automatically uses
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.
The switch supports the Fabric Extenders (FEXs) listed at
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/hw/interoperability/fexmatrix/fextables.html.
7 USB port
8 Screw holes (6) for attaching rack mounting
brackets
9 Grounding pad
Port-Side Intake Airflow Coloring
Burgundy
Burgundy
Burgundy
Cisco Nexus 93180LC-EX NX-OS Mode Hardware Installation Guide
Overview
Port-Side Exhaust Airflow Coloring
Blue
Blue
White
Blue
3