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

MPN: AP-MPS3ATX40 | SKU: C1011
Regular Price: $55.56
Price: $45.98
Out Of Stock.
  • Fits lots of Dell and HP systems
  • Fits in tight spaces - only 4 inches deep
  • Replacement for Dell Dimension 8300, Dell Precision 360, and Dell part numbers U2832, X2016, W2956, W2955
  • Athena AP-MPS3ATX40
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Out Of Stock.
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  • Key Selling Points

Key Selling Points

  • Fits lots of Dell and HP systems
  • Fits in tight spaces - only 4 inches deep
  • Replacement for Dell Dimension 8300, Dell Precision 360, and Dell part numbers U2832, X2016, W2956, W2955
  • Athena AP-MPS3ATX40
  • Description
  • Product Details
  • Customer Reviews
  • Q&A


Athena Power Hercules Micro PS3 400W replacement for Dell, HP. Athena AP-MPS3ATX40 400 Watt ATX Power Supply Replacement for Dell Dimension 8300, Dell Precision 360, and Dell part numbers U2832, X2016, W2956, W2955. Athena AP-MPS3ATX40 400 Watt Power Supply Micro PS3 20+4 pin 400W PSU GenuineAP-MPS3ATX40 - AP-MPS3ATX40 PRODUCT OVERVIEW:The HERCULES series has improved on power. Upgrading its overall power to 400Watts this Micro PS3 PSU can be used with many Dell, HP, IBM, Compaq, and Gateway PCs for either power supply replacement or new system assembly. Supporting up to ATX V2.2 motherboards and below and with smart silent technology the HERCULES 400W truly has surpassed its predecessors.The Micro PS3 DesignMicro PS3 power supplies are known mostly as a replacement power supply but it has now evolved and can be used for mini-ATX cases, custom built computers, mini-servers and more. With the increase of wattage and efficiency the micro PS3 is a conventional PSU that can be used for multiple purposes.Designed for custom built PCs, mini-servers, and HTPCs.The HERCULES 400 Watt power supply will support the most current ATX motherboards V2.2 and lower. Its PCI-E 6-pin connector supports an additional VGA card. This PSU is ideal for custom-built PCs, mini-servers and HTPCs.Smart Auto Fan Speed ControllerWith its thermal fan speed control it will detect the amount of heat generated by the computer and spin accordingly. Using this controller to detect the heat levels of the PSU it will adjust the fan speed accordingly, with this feature built in, worrying about the heat level of a PSU becomes almost non-existent.

  • Micro PS3
  • Output Power400 Watts
  • Input Votage: 115/230 Volts AC
  • Frequency: 47/63 Hz
  • Temperature Range: Operating: 0°C ~ +50°C on Full Load; Storage & Shipping: -20°C ~ +80°C
  • MTBF: 100,000 Hours on Maximum Load at +25°C
  • Rise time: Less than 20 ms
  • Hold-up Time: 17 ms Minimum at Nominal Input Voltage
  • Output:
  • Voltage: +5V: -5V: +12V1: +12V2: +3.3V: -12V: +5V-SB
  • Current: 15A: 0.5A: 16A: 16A: 15A: 0.5A: 2.5A
  • Connectors:
  • ATX Connector 24 (20+4) Pin x 1
  • P4-12V 4 Pin x 1
  • PCIE 6 6 Pin x 2
  • SATA 15 Pin x 3
  • Molex 4 Pin x 3
  • Floppy 4 Pin x 1
  • Aux 6 Pin x 1
  • HP Video 4 Pin x 1
  • DELL P6 6 Pin x 1
  • Dimension: ( L x W x H) 101.6 x 148 x 83.82 mm/ 4 x 5.86 x 3.3 in
  • Weight: 4.00lb
  • Micro PS3 / ATX12V
  • 20+4Pin
  • 400W


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

Brand: Athena Power


UPC: 821524014034

Compatibility: Micro PS3; ATX (see dimensions above)

Packaging: Retail

Condition: New

Product Details

Athena Power
Micro PS3 / ATX12V
Maximum Power
Main Connector
+12V Rails
PCI-Express Connector
2 x 6-Pin
SLI Ready
CrossFire Ready
Over Voltage Protection
Input Voltage
115 / 230 V
Input Frequency Range
50/60 Hz
Input Current
14A @ 115V, 7A @ 230V
+3.3V@12A, +5V@19A, +12V@20A, -12V@0.8A, +5VSB@2.5A
100K hours at 25°C
5.75"(W) x 3.25"(H) x 4"(D)
High efficiency
Low Ripple & Noise
Output over voltage protection
Short circuit protection on all outputs
Reset table power shut down
Complies with FCC part 15 subpart J Class B at 115VAC operation &
CISPR 22 Class B at 230 VAC operate
100% burn-in under high ambient temperature (50°C)
Vacuum-impregnated transformer
100% Hi-pot tested
HP Video Power Connector Ready

please check manufacturer website for cross reference

Package Includes

Customer Reviews

Review Summary
73.33% (11)
13.33% (2)
0.0% (0)
13.33% (2)
0.0% (0)
By Johnson
HP Power Supply Review
The customer service was outstanding. The purchase requirement was simple once you were told how to complete them.
By Marge
Athena Power AP-MPS3ATX40 400 Watt 20+4 pin Micro PS3 ATX Power Supply
Was very happy with the part it works and computer up and running will buy from her if need a part againGreat work
Very satisfied with this PSU
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.
By Karen Hill
Replaced my Dell Dimension 8300 psu
Was able to fix my dimension desktop with this power supply. No complaints.
By Gretchen Melton
Athena AP-MPS3ATX40 400 Watt ATX Power Supply
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
By Jim
Athena Power Supply
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.
By Lindley Gordon
micro ps3 power supply
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
By Mainecooncat
Flexible Power Supply
Power supply functioned in unit right out of the box.
By Jason
This PSU is noisy and lacks a power switch. I guess
By Dale Harris
Athena Power AP-MPS3ATX40 400 Watt 20+4 pin Micro PS3 ATX Power Supply
Very good product. Circuit protector a +++. Has all the connectors I needed plus more for future expansion.


Question & Answers
By OutletPC Shopper on 2013-06-06
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 2013-06-07

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

By OutletPC Shopper on 2013-02-10
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 2013-02-11

The power supply you've referenced would likely work, however is the recommended replacement/upgrade for you desktop model.

By OutletPC Shopper on 2013-03-22
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 2013-03-22

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

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