Fan Modules and Fan Trays
Fans are responsible for cooling the system and to maintain proper airflow through the system. The fan modules
work with N+1 redundancy.
The NCS-57B1 router has 6 latched fan modules that install into the chassis from the rear. The router supports
the NC57-B1-FAN1-FW fan module.
Figure 1: NCS-57B1 Fan Module
The NCS-57C3-MOD router has 6 latched fan trays that install into the chassis from the rear:
• Fan tray slots 0 and 1 support fan tray assembly with 2x60mm fans (NC57-C3-FAN2-FW)
• Fan tray slots 2 through 5 support fan tray assembly with 2x40mm fans (NC57-C3-FAN1-FW)
Hardware Installation Guide for Cisco NCS 5700 Series Fixed-Port Routers
3
NCS 5700 Router Overview
Field Replaceable Units
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