So this will most definitely fit the Optiplex 3020?

Not sure about a 3020 but it definitely fits a 7010

Would this work in a dell precision tower 3420

I don't believe that this power supply will fit the case. If you look at the picture of the 3429 supply on Amazon you will notice that at the end where the AC power connector is that there is a square recess on the one side - this supply is rectangular with no recess. Electrically it would probably work but you would have to see if it would fit inside the case.

Will this work with Optiplex XE2?

If suggest to carefully look at the specs from the manufacturer, I got it for a different model.

NT1XP YH9D7 255W Power Supply for Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems R7PPW 3XRJ0 V9MVK FP16X T4GWM M9GW7 FN3MN H255ES-00 D255AS-00 D255E001L F255ES-00

NT1XP YH9D7 255W Power Supply for Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems R7PPW 3XRJ0 V9MVK FP16X T4GWM M9GW7 FN3MN H255ES-00 D255AS-00 D255E001L F255ES-00

Product ID: 672998619

Details

Brand
POINWER
Compatible devices
Desktop
Connector type
ATX
Cooling method
Air
Current rating
5 Amps
Form factor
ATX

⚡255W max power output

📏Compact SFF dimensions 2.4x9.4x2.8 in

🔌Dual ATX connectors (8-pin + 4-pin)

Description

⚡ Power up your Dell SFF like a pro — no compromises, just pure performance!

COMPACT EFFICIENT - Small Form Factor design fits perfectly without bulk or clutter
SEAMLESS COMPATIBILITY - Plug & play with multiple Dell model numbers for hassle-free upgrades
POWER YOUR PRODUCTIVITY - Reliable 255W output tailored for Dell Optiplex & Precision SFF systems
CERTIFIED TESTED QUALITY - Each unit rigorously tested before shipping to ensure peak performance
UNIVERSAL VOLTAGE SUPPORT - 100-240V input for global use and stable power delivery

The NT1XP YH9D7 255W Power Supply is a compact, high-efficiency unit designed specifically for Dell Optiplex 3020, 7020, 9020, and Precision T1700 Small Form Factor systems. Featuring dual ATX connectors and universal voltage compatibility, it ensures reliable power delivery in a sleek form factor. Each power supply is tested for quality assurance, making it the go-to upgrade for professionals seeking dependable performance without bulk.

Specifications

ASIN	B07CHCNBM8
Brand Name	POINWER
Compatible Devices	Desktop Computer
Connector Quantity	2
Connector Types	ATX
Cooling Method	Air
Current Rating	5 Amps
Customer Reviews	4.4 4.4 out of 5 stars (241)
Form Factor	ATX
Manufacturer	POINWER
Manufacturer Part Number	4348299800
Maximum Input Voltage	240 Volts
Minimum Input Voltage	100 Volts
Model Name	AC255AS-00
Model Number	AC255AS-00 AC255ES-00 DPS-255LB
Output Wattage	265 Watts
System Bus Connector Type	8 Pin, 4 Pin
UPC	743070991440
Wattage	255 watts

Reviews

O**G

Seems like a sort of playing Russian roulette game to use it

23.01.2022

J**S

Llegó en perfecto estado, se instaló y está funcionando perfectamente hasta el monento, lo recomiendo.

8.07.2024

P**E

I’m really happy that it came as it was shown. I love it I recommend it to anyone. One problem is the cable pci-e 1x2subcables but I was 2x4subcables They gave me only one instead of 2pcs pcie

10.02.2026

A**R

The product has no issues, it's a great product and I returned it just because I have changed the ATX casing and I have to replace other size. My advise is, always buy stuff according to size and shape. Thank you Seller and Amazon Canada

20.12.2024

C**Z

I'm very impressed with this PSU. The 850W capacity and 80 Plus Gold rating are perfect for my gaming PC, providing all the clean, efficient power my components need. The RGB fan is a fantastic bonus; it’s a nice touch that adds a cool aesthetic to my build, and it's remarkably quiet.

19.09.2025

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I loved the variety of products available. Will definitely shop again.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Smooth transaction and product arrived in perfect condition.

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