Figure 4: Cisco 8501-SYS-MT - Fan Module Slot Legend
The rear of the chassis has the following:
• Two 3KW power modules providing 1+1 power redundancy when using AC power modules. One 3KW
power module when using DC power module. The power modules support port-side-intake (PSI) airflow
direction and different AC/DC inputs capabilities.
The Cisco 8501 switch supports DC power module in PSU 2 slot only and the
PSU 1 slot must be covered with PSU blank. When using the DC power module
in the 8501-SYS, the entire length of the power interconnect (i.e. power cable(s),
busbars, and so on) between the DC power input connector on the power module
and the power source must not be longer than 3 meters.
Note
• Eight 80mm counter-rotating double-fan fan trays providing 7+1 redundancy. The fan trays can be
removed individually.
Hardware Installation Guide for Cisco 8500 Switches
4
Cisco 8500 Switch Overview
Cisco 8500 Switches
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