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Non-Redundant AC Power Supply
Your system supports a non-redundant 550 W AC power supply.
NOTE: Non-redundant power supply is supported in systems with cabled hard drives and systems with an x8
backplane.
NOTE: When selecting or upgrading your system configuration, verify the system power consumption with the Dell
Energy Smart Solution Advisor at dell.com/ESSA to ensure optimum power utilization.
Removing A Non-Redundant AC Power Supply
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your
warranty. Read and follow the safety instructions that came with the product.
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet and
peripherals.
2. If applicable, rotate the system feet inward and lay the system on its side on a flat, stable surface.
NOTE: For systems installed with the wheel assembly, ensure that you lay the system on a sturdy, stable
surface with the wheel assembly extending off the edge of the surface.
3. Disconnect the power cable from the power source.
4. Disconnect the power cable from the power supply and remove the power cables from the cable strap.
5. Open the system.
6. Disconnect all the power cables from the power supply to the system board, hard-drive backplane, hard drives, and
optical drives, as applicable.
7. Remove the screw securing the power supply to the chassis and slide the power supply out of the power supply
unit cage.
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