Question about ASUS A8N32-SLI Deluxe Motherboard

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Power Supply Question

I was performing some troubleshooting and found that my power supply has a 20 pin motherboard power connector and the motherboard has a 24 pin power connector. I guessing that this is probably the reason for the motherboard instability and my inability to load windows. I know it's probably a stupid question but I figure it's worth asking before I put the $ out for a new power supply. Any insight would be greatly appreciated!

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Re: Power Supply Question - ASUS A8N32-SLI Deluxe Motherboard Motherboards

Buy a new power

Posted on Jul 09, 2008

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Re: Power Supply Question

Some power supply comes with the extra 4 pins separate since not all motherboards use the 24 of them. Be careful, though, because an extra 4 pin also comes on it for processor power and cannot be used for the extension part of the motherboard power. They are usually made up of red, black, orange and yellow single wires. If not, then you have to purchase a new 24 pin psupply.

Posted on Mar 19, 2007

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Re: Power Supply Question

You should find that there is a separate 4 pin plug attached to your power supply which can be pluged in the 4 holes left next to your 20 pin mobo socket, this is usualy used as the processor powering connector. It's easy to recognise as it looks like its been cut off the end of the 20 pin plug.

Posted on Mar 19, 2007

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Re: Power Supply Question

Hi you can buy a new 20 pin to 24 pin adaptor from ebay for a few pounds, or most new power supplys do have a 24 pin slot for your motherboard power let me know if you need anymore help regards steve,

Posted on Mar 18, 2007

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3 Answers

Power supply was removed and don't no where to put wires/acer aspire

cable has 20 or 24 pin group it will only go in one way

Apr 16, 2014 | Intel Motherboard

1 Answer

DX4820 power supply

To my knowledge, the Power Supply used is just the common ATX form factor design.

Approximately 6 Inches Wide, 5-1/2 Inches Long, and 3-1/2 Inches Tall.

Needs these power cables;

A) 24-pin ATX main power cable
Newer power supply's come with a 20 + 4-pin ATX main power cable.

That is so the power supply can be used on a motherboard, that needs a 20-pin, OR a 24-pin ATX main power cable.

B) 4-pin ATX +12 Volt power cable.
Often referred to as an ATX12V power cable.

[Note color of power cable connectors does NOT matter ]

Note the Lock on the side of the power cable's connector, and matching Tab on the motherboard connector.
The 20 + 4-pin ATX main power cable, and matching motherboard connector; has this type of Lock/Tab also.

C) Needs at least 2 SATA power cables.
The Harddrive is a SATA unit, and I believe the optical drive (CD/DVD drive) is too.

Often has a Lock on the connector. Press to release when installing, or removing.

D) Should have at least two 4-pin (Standard) Peripheral power cables.
Misnomered as 'Molex',

E) Needs one 4-pin (Small) Peripheral power cable, for the Card Reader.

Also needs 300 Watts.
A Power Supply like this one would work,

For additional questions please post in a Comment.

Apr 02, 2013 | Gateway mb.u1909.002 - Dx4820-05h System...

1 Answer

What power supply connector will work with the ms8137c motherboard (aka, 20 + 4 pin)

Ahem, you just posted 20 + 4-pin.

That means it can be a 20-pin ATX main power cable, OR a 24-pin ATX main power cable.

Most power supply's now have a 20 + 4-pin power cable.

Use the 20-pin connector, or add the additional 4-pin connector, to make a 24-pin ATX main power cable.


In direct answer to your question, however, it uses a 20-pin ATX main power cable.

For additional questions post in a Comment.

Jun 17, 2012 | Matsonic MS8137C Motherboard

2 Answers

I am replacing a motherboard with a G31-M7 TE and find that my existing power supply has a 20 pin plug consistant with the old motherboard but the new one has a 24 pin socket. Why is this and do I need to...

New motherboards have a 24-pin power connector. Here is a diagram of both plugs:


You can see that the two are almost identical. The extra 4 pins on the 24-pin connector provide extra connection points for a few voltages. Newer boards and processors need more current, and the extra pins were added to prevent overloading.

Adapter cables are available to go from your 20-pin power supply plug to the 24-pin motherboard connector. Here's one from TigerDirect, and other vendors have them as well. If you're not making other changes than replacing the motherboard, you shouldn't need more than this adapter.

If you are upgrading your processor along with the motherboard, you should probably replace the power supply too. Older power supplies are often in the 300-watt range, and this is too low for reliable operation with new processors, motherboards and video cards. A new 500 or 600-watt supply is not expensive, and would give you the 24-pin power connection the motherboard needs.

Hope this has helped. Thanks for using Fixya!

Nov 20, 2010 | Biostar G31-M7 TE Motherboard

2 Answers

I've got a new Gigabyte Ga-M68Mt-D3 mobo paired with a cooler master 460 watt power supple. Cpu is Amd phenom II 3.2 ghz with 4 gig of DDR3 ram. I powered up the supply attached to my ATX power supply...

Most motherboards now have a 24-pin power supply connector. If you haven't already found a diagram showing the pinouts of the 20- and 24-pin power plugs, here's one borrowed from a handy site:


The two plugs are essentially the same, but the 24-pin version duplicates some voltages on the extra pins. The extra pins in the larger connector were meant to provide extra current paths for voltages that see heavy loads from newer processors and motherboard circuitry. Depending on how a motherboard is designed, it might work with a 20-pin plug connected (leaving pins 11, 12, 23 and 24 empty). But typically if the board has a 24-pin connector it needs the 24-pin power supply plug.

Most power supplies have a 20-pin plug with a separate 4-pin section that fastens to it for connection to a 24-pin mobo connector. It typically has one side designed to slide onto the end of the 20-pin plug, essentially turning it into the 24-pin version. This added plug does not have a retaining clamp on its side, so you can tell it from the the 4-pin CPU power plug. The wire colors are also different. For reference, here is the processor power plug, from the same website:

New motherboard specs call for the separate processor power connector for the same reason the extra pins were added to the power supply connector: to handle the high currents needed by increasingly faster CPUs.

When the motherboard has these connectors, you need to use them all to get everything working. Hope this helps. Thanks to for the diagrams, and thank you for using Fixya.


Nov 19, 2010 | Motherboards

3 Answers

Motherboard has a 24pin connector for the power supply, but the connector on the power supply has a 20 pin connect? How do I connect it correctly

i presume that is a pentium 4 or newer motherboard. you will need a power supply that has at least one or two of the small four pin connectors as well... generally if it has that the extra four pins slides onto the 20 pin connector on one side and that makes up your 24 pin connection.

Sep 10, 2009 | HP VECTRA VLI8 P3 Motherboard (KZM6120)

1 Answer

I change the power supply but i have a little problem. The new one on the ATX power connector have only 19 pin then 20 old one plus extra 4 pin for something else. The new power supply in Rosewill...

The extra 4 pins on the power supply's atx connector is for new motherboards that require 24pin power supplies. If your motherboard has a 20pin port, then only connect the 20pin portion of your power supply connector.

If your power supply has a 24pin fixed connector that can't be split into a 20+4pin configuration, and your motherboard doesn't have space to let the extra 4pins on the side, then you might want to consider returning the power supply and change it for one that can be used as a 20 or 24pin. Otherwise you will need to cut the extra 4pins apart.

Jan 05, 2009 | ASUS P4B533 Motherboard

1 Answer

ATX Power Supply Question

Most new power supplies have a twenty pin Molex connector and a 4 pin Molex connector. If you look closely at the connectors you will see that they go together a certain way. It can be very hard to tell. Take a close look at the shapes of each terminal. Match them up exactly.

Nov 28, 2008 | Gateway Motherboards

1 Answer

Installation of foxconn 45cmx

Hi aligmatos, it is suggested that you use a 24-pin main power connector if you are going to fill up the motherboard & use a PCI-Express graphics card & Dual-Core Pentium CPU. The power supply should not be less than a 450W for this board, 550W would be better. You can use a 20-pin main connector but its not suggested. Make sure you connect the 4-pin 12V power connector. Your motherboard should still function with a 20-pin main power connector. Again I would not suggest it.
Main web site for Foxconn 45CM-S

Search preformed for Recommended power wattage for foxconn 45CM-S motherboard.

Good luck aligmatos!

Aug 26, 2008 | Foxconn 45CMX socket LGA775 motherboard...

1 Answer

Replacing a power supply.


You need to connect both 20-pin and 4-pin connector to *********** board. Your 4-pin connector is located between your CPU and a I/O connectors.

If you did it right first time, check if you have anything shorted on your board because your old P/S could go bad for reason.

Good luck!!!

Jun 20, 2008 | EliteGroup K8M800-M2 Motherboard

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