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Dimension E521 Power Supply

Last response: in Components
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Hey everyone,

I am looking to replace a burnt out power supply on a Dell Dimension E521. The current PS is a 305w H305n-00.

Specs:

AC Input
100 - 12V~/ 9A, 200-240v~/ 4.5A (50-60Hz)
DC Output
+5V / 22A, +3.3V /17A, +12VA /18A,+12VB/18A +5Vfp /2A, -12V /1A
+5v AND +3.3V SHALL NOT EXCEED 150w
+12VA and +12VB SHALL NOT EXCEED 264W
Max Power
305-Watt
Connectors
1x24-Pin P1 ATX Power
1x4-Pin P2 ATX Power
4xSATA P3, P5, P8, &P9 Power
1xFDD P7 Power
1xPATA P10 Power
Dimensions
3.75" x 6" x 5.5"(H x W x D)
Cooling Systems
1 X 80 mm Fans

I am wondering, based on the listed dimensions, if any standard ATX PS will work? I keep seeing whispers of proprietary Dell parts but my understanding is that applies mostly to older Dell models.

I am not really looking to upgrade, just replace. Direct links would be greatly appreciated.

Thank you very much!

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ko888 said:
ATX12V Standard Power Supply Dimensions:

150mm(W) x 86mm(H) x 140mm(D)

or

5.9"(W) x 3.4"(H) x 5.5"(D)

The Dell Dimension E521 is built on the discontinued BTX form factor.



My research suggests the BTX format uses a standard ATX psu specs... just the mobo is completely backwards. I just wanted to confirm that on here.
Power supply Master

bluepan said:
My research suggests the BTX format uses a standard ATX psu specs... just the mobo is completely backwards. I just wanted to confirm that on here.

The physical dimensions you posted are slightly larger than the ATX standard but you should be able to fit an ATX12V PS2 standard power supply into that space. There are other power supply form factors that were part of the BTX standard depending on the case style being used.

BTX retained the same power connector pin-out standards that the ATX12V standard uses.
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