Question about Dell OptiPlex 990 MT MT 1 x Core i7 2600 34 GHz RAM 4 GB HDD 1 x 500 GB DVDRW Radeon PC Desktop

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I'm looking for the pinout for the optiplex 990 motherboard power switch.

I've changed cases and kept my dell motherboard. The powerswitch on the dell motherboard looks proprietary to dell.

Posted by Anonymous on

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Posted on Jan 02, 2017

  • 86 Answers

SOURCE: manual dell optiplex gx 260

Have you tried this website:

http://tinyurl.com/29eg4e

I just went to dell and did a search on gx260 and then I clicked on manuals.

Posted on Feb 19, 2008

  • 326 Answers

SOURCE: Dell optiplex won't Boot-up.. Orange light on motherboard

its going to rather your power supply or your motherboard has died, id try a different power supply first

Posted on Aug 11, 2008

  • 1 Answer

SOURCE: connecting front panel leads of generic case to 4600 motherboard

b9bfa92.jpg



-MrSlickShoes

Posted on Mar 20, 2009

  • 16 Answers

SOURCE: Dell Optiplex GX280 Video Card Install Problem

You hit that one right on the dot.  ATI website showed the specs for that graphics card you installed as needing a 300 Watt power supply.  Good news though... I researched newegg.com and I believe I found your 300W power supply.  There are 4 different Optiplex gx280 designs with 4 completely different power supplies.  Since you bought the low-profile video card, I believe you have the slim computer case and this power supply should work for you...
http://www.newegg.com/Product/Product.aspx?Item=N82E16817374002

Good Luck

Posted on Jun 11, 2009

Current009
  • 135 Answers

SOURCE: Dell optiplex 330 flashing orange on the power botton

Try to clean the RAM and place it again in the motherboard.

Posted on May 31, 2010

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On the motherboard you should see corresponding with + and - Colored wires are always the + and black (ground) is the -.

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Hello you can download a manual here:

http://www.msi.com/product/mb/645E-Max2.html#/?div=Manual

The pinout should look like this:



8_22_2012_2_20_15_pm.jpg

Its also printed in on the mainboard with very small letters.
Make the connection propely and the computer should start again.
Powersw goes to powerswitch etc.

Good luck

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Dell optiplex gx520 flashing yellow light on motherboard


According to the information you gave it seems it can still be the RAM. I've had a few PC's unable to startup due to bad memory.

Either that or the the front panel conectors are wrongly connected. Sometimes they do have a color code, but it's best to reference the manual. Can be the button . . .

If this is no help, I'd like to know more.

Apr 24, 2012 | Dell OptiPlex GX520 PC Desktop

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I need to know how to open up my dell OptiPlex to replace the modem. can't find a way to open the case.


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Sep 04, 2011 | Computers & Internet

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Can i change out the motherboard on my dell dimension 4600 and use the one from my optiplex gx 520 in place of it.


No you can't. The Optiplex system board is a BTX type, and the Dimension uses an ATX style. The BTX board was supposed to be the new standard, with the layout changed to improve cooling air flow. Unfortunately, the I/O connectors (keyboard, etc.) aren't in the same place as on ATX boards, and you can't just drop the BTX board into the same case. (This is one of the reasons the new design didn't catch on. Seems people didn't like the idea of shelling out for a new case as well as the board.)

May 28, 2011 | Dell Optiplex GX520 (XG309) Motherboard

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Front Panel help for Dell Dimension 4600


Go to dell site and query for *********** board specs. Then query for the pinouts on the board. Or goodle dell optplex+motherboard+hardwire connections. good luck

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Dell optiplex gx260 mother board


It would be easier to order the cable and front panel board assy as one. easy on ebay.
I have worked on them for years and never bothered to trace them out. and dell doesn't post the pinout anywhere.
If you can't find one I can get it for you cheap.

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Hi there is one more thing you should check before buying another mobo. Trace the wires from your on/off switch on the case, unplug it and then bridge the 2 pins out with a screw driver, this will start the computer. runit as normal, then shut down and see if you get a restart. If the computer does not restart on its own you have a faulty switch. Clean it or replace it. Regards mistyman

Sep 22, 2007 | Computers & Internet

1 Answer

Power on/boot-up problem


Have I got a story for you? Dell inadvertently used some defective capacitors in their Optiplex motherboards and some power supplies. From what I?ve experienced and read this affects the Optiplex 270 and early 280 lines. In my case my systems had video display problems and eventually ended up not booting. The giveaway is looking at the large 150 uf capacitors; they are the larger ones usually with an ?X? inscribed on the top. If the tops of the capacitors are flat you?re out of luck but if any of them are bulging (even slightly) at the top, leaking electrolyte or split Dell will replace the motherboard for free. This program is in effect till 2008. I wouldn?t recommend pulling the power supply apart but the flashing yellow power light for me has been a failed power supply. I would check out the motherboard for bad capacitors then call Dell. It?s likely they will replace the power supply if it?s in warranty, perhaps even if its out in light of the capacitor issue. If you?ve got some rounded caps on the motherboard I would also ask them to replace that as well. Let us know if you have any other questions and please don?t forget to rate this posting.

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