AC255ES-00 PCB050 255W Power Supply Compatible with Dell SFF

In this review of the AC255ES-00 PCB050 255W power supply, the bottom line is straightforward: it is a practical replacement for Dell Optiplex 3020, 7020, 9020 and Precision T1700 Small Form Factor systems when the original unit fails. The reviewer found the unit delivers stable 255W DC output and a wide 100-240V AC input range, making it suitable for desktop refurbishes and repairs. The review focuses on compatibility, connector layout and build reliability rather than flashy extras, so technicians and owners who need a drop-in power supply will find the information here useful.

Key Features

• Broad compatibility: Works with a range of compatible P/N and M/N codes so it replaces many OEM variants without modifications.
• Wide AC input: 100-240V~/4.6A (50-60Hz) supports use in diverse regions and on different mains voltages.
• Consistent DC output: The unit provides a maximum 255W output which is adequate for typical SFF system components and modest upgrades.
• Standard connectors: P1 8-pin ATX and P2 4-pin ATX power connectors match the small form factor motherboard inputs for easy installation.
• Tested before shipping: Each power supply is tested prior to dispatch, offering reassurance about immediate out-of-box functionality.

Who It's For

This power supply is aimed at IT technicians, refurbishers, and home users who maintain or repair Dell Optiplex 3020, 7020, 9020 and Precision T1700 SFF machines and need a direct replacement without sleeving or rewiring. It is specifically valuable when the original Dell unit is obsolete or unavailable and the device requires the same connector layout and wattage.

Users who run high-end GPUs, multiple drives, or heavy overclocked CPUs should look elsewhere, since 255W is intended for standard SFF configurations and not for power-hungry custom builds. Also, confirm the part numbers listed before purchase to ensure an exact match with your machine.

Pros & Cons

Pros

• Direct compatibility with many OEM part numbers and small form factor Dell models for hassle-free replacement.
• Wide 100-240V AC input range allows use in different regions without a transformer.
• Standard 8-pin and 4-pin ATX connectors simplify installation in supported SFF systems.

Cons

• Maximum 255W output limits suitability for heavily upgraded or high-power components.

Specifications

Our Verdict

The AC255ES-00 PCB050 255W power supply is a sensible, value-oriented replacement for supported Dell SFF desktops. It covers the essential compatibility and power needs for stock configurations and is tested before shipping, making it a practical choice for repairs and refurbishing projects. Buy it if you need a reliable, direct-fit replacement and do not require high wattage for heavy upgrades.

Frequently Asked Questions

Will this power supply fit my Optiplex 3020 SFF?
Yes, it is listed as compatible with Optiplex 3020 small form factor systems but check the OEM part number on your original unit first.

What connectors does it include?
The unit includes a P1 8-pin ATX power connector and a P2 4-pin ATX power connector used by the supported SFF motherboards.

Is it safe for international use?
Yes, the 100-240V~/4.6A, 50-60Hz input range supports use in multiple regions, but ensure your power cord and local outlet match the plug style.