Dell PS-5251-2DS power supply replacements.
The following product(s) are recommended for Dell PS-5251-2DS. All items in the list are compatible replacements for Dell PS-5251-2DS power supplies:
The LPZ18 power supply delivers a true 500 watts of stable, UL Listed power. The integrated 120mm fan maximizes cooling while maintaining a silent noise level. A pvc coating on the shell absorbs any additional sound coming from the surroundings. This 500 watt power supply is loaded with just about any connector you could ever need.
In the world of computer power supplies this is just about as good as it gets. With a hefty 630 watts of juice there is surely no computer too big to overload this baby. Inside the power supply is three 80mm cooling fans that operate in a hush-hush manner.

Disclaimer: This power supply cross reference chart is for informational purposes and reflects only the opinion of the author. The sole responsibility rests with the buyer when selecting a power supply for a computer. This power supply cross reference is simply here to offer help and suggestions based on previous experience, and though extremely accurate, offers no guarantees.