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Athena AP-MPS3ATX40 ATX PS3 Power Supply

Athena Power AP-MPS3ATX40 400 Watt 20+4 pin Micro PS3 ATX Power Supply

In Stock
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Athena Power AP-MPS3ATX40 Specs

400W ATX Power SupplyATX Power Supply20+4 Pin ATX Power SupplySATA Power Plug Power Supply4-Pin Molex Power Supply80mm Dual Fan Power Supply

The Athenapower AP-MPS3ATX40 20 + 4pin power supply is a Micro PS3 power supply that replaces several HP, Gateway, Dell, and eMachines units. This reduced form factor PSU - the Athena Power 400 Watt Micro PS3 - features 400 Watts of power. The Micro PS3 ATX power supply form factor is commonly found in Dell Dimension, Dell OptiPlex, Dell PowerEdge, Dell Precision, Dell SmartStep, and many HP desktop Systems. The MPS3ATX40 micro PS3 pc power supply features a 20+4pin ATX connector along with support for PCI-Express, SATA, AUX 6-pin, Dell P6, and HP Video Power connector. The Athena AP-MPS3ATX40 400 Watt ATX PSU is popular as a replacement power supply for Pavilion XG814, HP Pavillion 7955, dell dimension 4400 power supply, power supply for emachines T6534, and other models. This power supply is very similar to a Dell L305N-00 power supply as well. This Micro PS3 ATX power supply has great reviews and is backed by a warranty from Athena Power.

See If The AP-MPS3ATX40 Power Supply Will Work With Your Computer: View the Support List Here

  • Model: Athena 400W ATX Power Supply - MPS3ATX40
  • Micro PS3 ATX Form Factor (Reduced Depth)
  • 400W Power
  • High efficiency
  • Low Ripple & Noise
  • Output over voltage protection
  • Short circuit protection on all outputs
  • Reset table power shut down
  • Dell P6 6-pin Ready
  • Supports SATA and PCI-Express
  • AUX 6-pin Ready
  • HP Video Power Connector Ready
  • 20+4-pin ATX Connector
  • 100% burn-in under high ambient temperature
  • Vacuum-impregnated transformer

Advanced Specifications

  • Output Specifications:
    • Voltage: +3.3V, +5V, -5V, +12V, -12V, +5VSB
    • Current: 12A, 19/21A, 0.5A, 20A, 0.8A, 2.5A
  • Connectors:
    • One (1) 20+4-pin ATX connector
    • One (1) 4-pin ATX12V connector
    • One (1) 4-pin HP video connector
    • Three (3) Peripheral power connector
    • One (1) Floppy drive connector
    • Three (3) SATA power connector
    • One (1) 6-pin Dell P6
    • One (1) 6-pin PCI-Express
    • One (1) AUX Connector (6-pin)
  • Compatible With:
    • ATX 24 and 20 pin Computers
    • Dell Dimension 1100, 2200, 2300, 2350, 2400, 3000, and 3100 replace
    • Dell Dimension 4300, 4400, 4500, 4550, 4600, and 4700 replace
    • Dell Dimension 8200, 8250, 8300, 8400, and 9100 replace
    • Dell Dimension E310, E510 replace
    • Dell OptiPlex 170L replace
    • Dell OptiPlex GX50, GX60, and GX150 tower systems replace
    • Dell OptiPlex GX240, GX260, GX270, GX280 tower systems replace
    • Dell PowerEdge 400SC, 600SC, and SC420 replace
    • Dell Precision WorkStation 340, 350, and 370 replace
    • Dell SmartStep 100D and 150D replace
    • HP Pavillion
    • HP Desktops (Most Models)
  • Unit Dimensions:
    • 3.25" x 5.75" x 4" (H x W x D)
    • 4" Depth is Reduced Size to fit special cases

Package Includes

  • Athena Power 400-Watt ATX Power Supply
  • Power cord

Item Number: C1011
Brand: Athena Power
Manufacturer Part Number (MPN): AP-MPS3ATX40
Condition: New
Compatibility: Micro PS3; ATX (see dimensions above)
Packaging: RETAIL
Availability: In Stock
Athena Power AP-MPS3ATX40 400 Watt 20+4 pin Micro PS3 ATX Power Supply
In Stock

APMPS3ATX40 Reviews

Review of AP-MPS3ATX40
(based on 20 reviews)
Just what I needed
By Gray Rains from AZ. on July 30, 2013
I went to OutletPC for the first time needing a new power source. I emailed a question about the Athena Power Supply unit and received a response in less than 24 hours.
Tis is exactly what I needed. It was simple, easy and rewarding to do business with OutletPC.
I intend to be a steady customer of their from now on. Great work by all concerned. Thank you!

The ease of installation and it offers the wattage I needed.
I cannot find a thing I do not like about it.

I would recommend this item to a friend.

eh, its okay
By anthony from las vegas Nevada on July 27, 2013
i have had no problems with this product
it has way more power than i needed but now when i upgrade again i won't have to get another power source
it seems to only have one sata hard drive hook up

I would recommend this item to a friend.

DP Manager
By Barry from Warwick, RI on May 20, 2013
Quick and easy, thanks.

I would recommend this item to a friend.

Athena power supply
By Ray from Chelsea, Michigan on May 12, 2013
just as described online. At first i didn't think it would fit my motherboard but you said it would fit and it worked like a dream. Installed and up and running great. I would recommend this item to anyone and outlet PC delivered it in a very timely fashion and in great condition.

I would recommend this item to a friend.

micro atx psu
By Rosemary Harding from El Paso, Texas on April 3, 2013
Like The site a lot. Was able to compare prices on mps3atx40 and bought it

I would recommend this item to a friend.

HP Power Supply Review
By Johnson from Nevada on September 23, 2012
The customer service was outstanding. The purchase requirement was simple once you were told how to complete them.
cost was really reasonable.
Product made loud buzzing sound once connected.
contacted OutletPC and need to return system for quick check.

I would recommend this item to a friend.

Athena Power AP-MPS3ATX40 400 Watt 20+4 pin Micro PS3 ATX Power Supply
By Marge from PA on August 19, 2012
Was very happy with the part it works and computer up and running will buy from her if need a part again
Great work

that part fit and work well

I would recommend this item to a friend.

Very satisfied with this PSU
By DS from London on July 5, 2012
Bought this to replace 8-year old PSU on my Dell Dimension 8300. Installing it was pretty straightforward - it is almost a like-for-like replacement with some added advantages like an additional 100W of headroom compared to the original PSU.
1. easy to install
2. much lighter and quieter than the original PSU
3. additional 100W of headroom
4. additional connectors will allow you to install more recent devices
Nothing at this price

I would recommend this item to a friend.

Replaced my Dell Dimension 8300 psu
By Karen Hill from Houston, Texas on May 28, 2012
Was able to fix my dimension desktop with this power supply. No complaints.

I would recommend this item to a friend.

Athena AP-MPS3ATX40 400 Watt ATX Power Supply
By Gretchen Melton from Chicago, Illinois on May 28, 2012
This is a micro ps3 psu so it's got reduced depth. The best part of that is that it allows air to flow better inside your case. I bought this because my other power supply died but I was pleased to find that it was micro ps3

I would recommend this item to a friend.

Athena Power Supply
By Jim from Somonauk, IL on May 28, 2012
Bought for a replacement for older and smaller HP power supply. It fit perfectly and delivered the power as advertised. I am pleased with this product.
It fit the small HP case.
Overall I can't think of anything.

I would recommend this item to a friend.

micro ps3 power supply
By Lindley Gordon from Rochester, NY on May 26, 2012
at first I bought a standard power supply only to realize that my hp can't support a full sized psu. Oh well. Anyway I bought this ps3 micro power supply and it worked. It's a 20 4 pin unit and has 400 watts output so it is much more capable than my old 250 watt one. I would recommend this one

I would recommend this item to a friend.

Flexible Power Supply
By Mainecooncat from Woodbridge, NJ on May 26, 2012
Power supply functioned in unit right out of the box.
Connectors compatible with many PCs, and adequate wire lengths.
Not applicable

I would recommend this item to a friend.

By Jason from Henderson, NV on May 16, 2012
This PSU is noisy and lacks a power switch. I guess

Athena Power AP-MPS3ATX40 400 Watt 20+4 pin Micro PS3 ATX Power Supply
By Dale Harris from Columbus,GA. on May 3, 2012
Very good product. Circuit protector a +++. Has all the connectors I needed plus more for future expansion.

I would recommend this item to a friend.

Athena Power AP-MPS3ATX40 400 Watt 20+4 pin Micro PS3 ATX Power Supply
By Dave from Las Vegas, NV on February 27, 2012
Works Great.
Smaller Compact Design
The Bright Blue LED light on the back, It lights up a room, had to cover it with electrical tape.

I would recommend this item to a friend.

Athena Power Supply, 400watt
By Mike from Easton, Pennsylvania on February 9, 2012
Works great, fit in pc perfectly. Quiet. All connectors needed were supplied.
Great price value. Fit perfectly in pc. Arrived on date promised.
Nothing to dislike

I would recommend this item to a friend.

power supply
By Jeff from Las Vegas, NV on January 31, 2012
Worked great, priced right!

I would recommend this item to a friend.

Great Replacement
By John Abrams from Fremont, CA on December 16, 2011
Bought it to replace power supply in my sr5703wm. Worked Great!
fit with extra room
really shiny

I would recommend this item to a friend.

was not happy when i had to purchase another cord for it.
By Darren from Patterson,Ca on December 15, 2011
The aux plug was two short and i had to buy another to extend it so my system would work not but everything else was o.k.
good unite
short cord


By Ted from Pine, AZ. on June 6, 2013
I am replacing an ISO Switching Power Supply Model # ISO-400. Is this the one I want. Can you tell me my best option? I want a strong, long lasting unit. If it costs a bit more that is okay. Thank you, Ted Bloom
By Customer Service on June 7, 2013

This Athena Power AP-MPS3ATX40 power supply would be a great replacement for your original unit.

By Johnny Folker from Hueytown, Alabama on February 10, 2013
I found on another internet website where they said this power supply would be a direct replacement/upgrade for the Gateway 160 watt power supply, part number 6500704, can you tell me if it does or not? the commputer is a Gateway 500 S Plus, system model number E-4000. Any information you can provide will be greatly appreciated.
By Customer Service on February 11, 2013

The power supply you've referenced would likely work, however http://www.outletpc.com/es1615.html is the recommended replacement/upgrade for you desktop model.

By Vicky from Boise, ID on March 22, 2013
i have a dell dimension 4500. power supply HP-P2507F3P 250wt. will the 400wt work , are the connectors and pins the same??
By Customer Service on March 22, 2013


This power supply will be the appropriate replacement for your computer.

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