Power Supply Overview
You can install two types of power supplies in the chassis:
The switch chassis has two slots in which you can install power supplies using any of the following combinations:
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Two AC-input power supplies
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Two DC-input power supplies
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One AC-input power supply and one DC-input power supply
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One AC-input power supply (leaving the blank cover on the other slot)
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One DC-input power supply (leaving the blank cover on the other slot)
Note |
If you leave any power supply slots empty, you must ensure that the blank cover is installed in that slot to maintain the designed airflow. |
This table lists the power supply models.
Part Number | Description |
---|---|
C6840-X-750W-AC= |
Cisco Catalyst 6840-X power supply AC-750W |
C6840-X-750W-DC= |
Cisco Catalyst 6840-X power supply DC-750W |
C6840-X-1100W-AC= |
Cisco Catalyst 6840-X power supply AC-1100W |
C6840-X-1100W-DC= |
Cisco Catalyst 6840-X power supply DC-1100W |
The power supplies can work together in Redundant Mode, in which each power supply operates at approximately 50 percent of its capacity, no greater than 60 percent and no less than 40 percent. If one power supply fails, the other power supply can provide power for the entire system on its own. This is the default and recommended mode for production.