Cisco Catalyst 9500 Series Hardware Installation Manual page 63

Installing Field Replaceable Units
If the switch fails to meet the minimum number of required fans, the switch shuts down automatically to
prevent the system from overheating.
Part Number
C9500X-FAN-1U-R
C9500X-FAN-1U-F
Supported Switches
C9500X-28C8D
C9500X-60L4D
Cisco Catalyst 9500X Series Switches Hardware Installation Guide
Fan Module Overview
Description
• Each switch contains six
field-replaceable fans with
variable-speed operating in
N+1 redundancy mode.
• Provides support for
front-to-back airflow and
back-to-front airflow fans. By
default, the switch provides
front-to-back airflow fan.
Note the following usage
guidelines:
• -R in the part number indicates
reverse airflow (front-to-back)
and -F indicates forward
airflow (back-to-front).
• All the fan modules used in
the switch must have the same
airflow direction.
• To change the airflow
direction in the unit, ensure
that you change all the fan
modules to the same type of
airflow support. For example,
to change to forward airflow,
replace all the six fans with
C9500X-FAN-1U-F. After
replacing all the fan modules,
power cycle the unit manually.
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