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Cisco Part Number: C9K-PWR-1500WAC is a Catalyst 9500X 1500W AC Power Supply
The Cisco Catalyst 9500 Series Switches support dual 1+1 redundant power supplies (AC or DC). The switches ship with one power supply by default. The second power supply can be purchased at the time the switch is ordered or at a later time. If only one power supply is installed, it should always be in power supply bay #1.
The switch chassis has two slots in which you can install power supplies using any of the following combinations:
The C9K-PWR-1500WAC 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.
The AC and DC power supply modules have the following LEDs:
