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#### Power Supply Backplane Overview

The power supply backplane carries 12V power from the power supplies to the power distribution board over a pair of bus bars. It also delivers 3.3V standby power over a three-pin wire cable.

| Caution - The system supplies standby power to the power distribution board even when the server is powered off. To avoid personal injury or damage to the server, you must disconnect the power cords before servicing the power supply backplane.

##### Related Information

- Remove the Power Supply Backplane

- Install the Power Supply Backplane

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