Question about Dynex 400-Watt ATX CPU Power Supply

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Old power supply no good. bought this dynex 400 watt atx cpu power supply and need to know how to connect wires as there are some plugs that can go in multiple spots.

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  • Harvey Morrow
    Harvey Morrow May 11, 2010

    The largest plug goes onto the motherboard along with a small square one (4 wire). You will have several similar flat, 4 wire connectors that are about 1 inch wide. (Yellow, Black, Black, Red) These go into the CD/DVD's. They are all the same so just use length to make your choice. Older hard drives with a wide cable (about 2 inches) on them take the same connector. The newer hard drives (SATA) that have a cable that is less than 1/2 inch wide need connectors that are thin and about 3/4 inch wide. If you look carefully on the backs of your devices, it should be clear which type to use. Those that look identical, are identical.

  • David Bonilla
    David Bonilla Mar 11, 2014

    thanks Harvey,for this info my hp it's working great.

  • David Bonilla
    David Bonilla Mar 12, 2014

    my computer keeps going to sleep how can I fix this.


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I change my power supply for a 400 watt Dynex on my computer model Gateway 831 GH. Since I receive an error message on a bleu screen, sometimes the computer shut down, and freeze.
Do you know what is my problem ?

Posted on Aug 06, 2009

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As long as you have the 20 or 24 plug in and the 4pin square plug in plus the hard drive dvd floppy fans i donot no your motherboard or graphic card so i cannot say anymore only next time write down your conections before removing power supply or get manual for your pc

Posted on Jul 30, 2009

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I have the dynex 400 watt atx power supply,connector do I use my sata connector.

They try to make them "idiot proof." Only the correct one should fit in the power receptacle on the dvd/cd player.

Try the different ones and don't force anything...

Mar 09, 2014 | Dynex 400-Watt ATX CPU Power Supply

1 Answer

Power supply is no on

First, make sure it is plugged in correctly. If it is, make sure the power switch is set to on. After that, if it does not run, it is most likely dead, and will need to be replaced.

Mar 20, 2011 | Dynex 400-Watt ATX CPU Power Supply

1 Answer

I recently purchased a Dynex 400 watt atx power supply for my Dell optiplex gx280 (slim form). The reason I did this is I have a new PNY geforce 8400 GPU and my old power supply is only 160 watts (1/2 the...

Sounds like the power supply is not compatible with the motherboard. If the motherboard can't support a 400 watt powers supply you will either get a blinking light or nothing at all. Those optiplex's use a proprietory power supply because of the pin connectors and how a power supply is supposed to fit in there. If you can't find a 400 watt power supply that fits then get a hold of Dell and see if they sell one for that computer.

Sep 22, 2010 | Dynex 400-Watt ATX CPU Power Supply

1 Answer

Does the Dynex 400 ATX have a remote shut on/off? I would like to replace it for a FSP300-60tha.

Yes there is, please back picture below. moz-screenshot-6.pngPlease comment if the information provided has been helpful for the improvement of my support assistance. Thank you and regards.


Aug 22, 2010 | Dynex 400-Watt ATX CPU Power Supply

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