Cisco CQ211L01-48H8FH Hardware Installation Manual page 47

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Replace Chassis Components

Replace AC Power Supply

This procedure below applies to the following power supply units (PSUs):

• S 1 1

Note

To replace a single PSU (for example, due to PSU failure), follow the procedure below.

To replace both PSUs (for example, to change type or output of PSU), disconnect power from both PSUs and

follow the procedure below.

We recommend that you occupy both the power supply slots of the fixed port routers with power supplies. In

case a power module fails, it is recommended to retain the failed power module in its slot until it is replaced

with a new power module. This recommendation ensures that the system airflow is not impacted adversely,

which may then result in the overheating of the router and its components. Duration to replace the PSU at

ambient room temperature (23-degree C to 27-degree C) is within 5 minutes.

Replace AC Power Supply

Hardware Installation Guide for Cisco CQ211L01 Switch

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