Question about Gateway (ATX-300-12EB3) (ATX30012EB3) 300-Watt Power Supply

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Installing a new power supply unit

I am trying to install a new dynex 400 watt power supply and have two connectors that I cannot figure out where to connect them.

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Nothing to worry about, there are always extra connectors for different configurations.As long as you have the 24 pin and 4 pin connected to the MoBO and your CD/DVD drives and HDD are powered you'll be OK

Posted on Jul 30, 2009

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Posted on Jan 02, 2017

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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...

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Installed dynex power supply on pc and now no signal to moniter


if computer powers up I would suggest looking over your work again with the video card. I would bet loose power cable to video card

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Turning on my computer by pressing the On/Off switch on front of desktop computer does not always turn machine one.


more likely the switch itself not retaining the on position
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Jul 21, 2017 | Dynex DX-400WPS 400-Watt Power Supply

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Compaq Presario SR1750NX wouldnt come on, installed dynex 400 watt atx power supply now it comes on & fan runs but monitor is still blank. Installed ATI RADEON 7000 GRAPHICS CARD, still nothing, the...


Hi,
After adding new graphics card monitor display will not work with motherboard display connector.
So, connect your monitor VGA cable with your graphics card display port.

Thanks for using FixYa.

May 22, 2011 | Computers & Internet

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

New PSU


Hello Kathyhudson,

All the cables are connected, the PCI express (6) pin cable is only needed if you have a PCI video card.

A four pin connector is for the motherboard if it requires it.

Post back with any new questions, or additional info for further help. Thank you for choosing Fixya!

Apr 02, 2009 | Dynex 400-Watt ATX CPU Power Supply

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