i need power supply 550w for dell optiplex 980 plz !!

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dr backtrack

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Jun 24, 2013
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Hi there .. i need to buy power supply 550w for dell optiplex 980 .. but the problem is i bought a 550w power supply but the plug does not fit in motherboard ??
can anyone help me with this plz
 
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Kisianik

Kisianik

Splendid
Jan 24, 2013
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Help me to help you, to make it easy. How many pins your motherboard has?
I see less expensive ones, but need more time to check for compatibility http://www.amazon.com/Cable-CB-20M-24FHP-20-Pin-ATX-Mini/dp/B004BO94BC/ref=sr_1_1?s=electronics&ie=UTF8&qid=1372120521&sr=1-1&keywords=20Pin+to+Mini+ATX+24Pin
I probably can find more if you help me.
 
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Dark Lord of Tech

Dark Lord of Tech

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Aug 18, 2009
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If you have an ATX power supply with a 24 pin main cable, it's okay to plug it into a motherboard with a 20 pin connector. It was designed to work that way. You can see an example in the picture above. The extra 4 pins on the cable just hang over the end of the motherboard connector. The 24 pin cable only fits into a 20 pin socket at one end so you can't plug it in incorrectly. The extra 4 pins were added to the 24 pin version of the cable to provide one extra wire for ground, 3.3, 5, and 12 volts. But it's okay to leave those 4 pins disconnected because a motherboard with a 20 pin connector doesn't need them. The only problem you can bump into (literally) is if there is something blocking the spot where the 24 pin cable hangs over the end. Or sometimes the end of the 20 pin motherboard connector is too thick to fit between the pins of the 24 pin cable. You can solve that problem by carefully shaving down one end of the 20 pin motherboard connector. It's just plastic. You won't miss it. If you can't get them to fit together then you can get an adapter cable which will make it work. The 24 pin cable plugs into one end of the adapter and then the adapter plugs into the 20 pin motherboard. But you should avoid using that kind of adapter if you can because the extra wire and connector are just more things which can go wrong. Adapters also slightly increase the voltage drop which is something worth avoiding. It's better to first see if you can get a 24 pin cable to fit into a 20 pin motherboard before resorting to an adapter.

ATX 20+4 pin main power cable

http://www.playtool.com/pages/psuconnectors/connectors.html#24into20

 
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Kisianik

Kisianik

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Jan 24, 2013
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I think it is not a good find, look at picture below

4270144479_76010578ac.jpg


Left: Standard ATX connector to ATX motherboard
Right: The 24 pinout arrangement that the smaller motherboard has. The pinouts are the exact same as the standard ATX, just smaller connector.

So, OP need connector, good quality, to connect standard (white in the picture) ATX connector to smaller one on motherboard

Here is motherboard

tech_mb_mtdt.jpg


1 service mode jumper (Service_Mode)
2 RTC reset jumper (RTCRST)
3 battery socket (BATTERY)
4 PCI card connectors ( SLOT 2 & 3)
5 PCI Express x16 card connector(SLOT1)
6 PCI Express x16 (wired as x4) connector (Slot 4)
7 internal serial card connector (Serial2)
8 speaker connector (INT_SPKR)
9 PCI Express x1 wireless card connector (PCIE_WLS1)
10 thermal sensor connector THRM3)
11 fan connector (FAN_CPU)
12 power connector (12V POWER)
13 memory module connectors (DIMM_1-4)
14 front panel connector (FRONTPANEL)
15 Internal buzzer (BEEP)
16 password jumper (PSWD)
17 SATA drive connectors (SATA0-3)
18 intruder connector (INTRUDER)
19 internal USB connector (INT_USB)
20 front I/O connector(FIO)
21 power connector (MICRO_PWR)

21 is the Micro MOBO connector.

Found another picture, still hard to believe.

Free-Shipping-D441T-0D441T-CN-0D441T-DDR2-Intel-Desktop-Motherboard-For-Optiplex-980-100-tested-work.jpg


Now everyone can see the problem, I hope.
 
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G

GhislainG

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Jul 16, 2008
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The link that I originally provided includes the info required to make the adapter cable. The summary at the link provided by SR-71 Blackbird says "KDM-CBL-DELL-P16 converts a standard ATX 24-pin to a Dell ATX 24-pin and Dell P-16 connector. This enables a standard ATX power supply to be used on many Dell systems with special Dell ATX motherboards." We obviously didn't check the cable as we don't have it and it was easy to presume that the info was accurate.
 
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Kisianik

Kisianik

Splendid
Jan 24, 2013
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Hey, I am blaming anyone here, I just stated that the link was not correct, this is it.
I don't have this Optiplex as well, but used Google for about 1-2 hours looking for answers, found another forum, got picture from there.

So, we need to find regular 24 pin ATX to 24 pin Micro ATX adapter. I checked Dell forums, nothing there, a few people asked the same question, but no answer was provided.

I am not going to give up so easy, just because.
 
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Kisianik

Kisianik

Splendid
Jan 24, 2013
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Good rewiring guide, next links almost good, but the it is 20 pin regular ATX to HP mini 24 pin motherboard, almost, but not good...
 
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S

shawn murphy

Honorable
Sep 19, 2013
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Old Thread, but I thought I'd post a semi-but-good solution to this issue for the 980 for the Googlers out there. I bought this on eBay for the beast of a processor, a corei5 680 @ 3.6ghz, before I knew about all the proprietary Dell issues. Seems like I may have solved them.

I bought the recently available EVGA GTX650-Ti (http://www.newegg.com/Product/Product.aspx?Item=N82E16814130838)

20130913_211833.jpg


20130919_071305.jpg


Which fits in the PCI-e primary slot, with some slight dremeling of the fan housing to accomodate the PS mouse and keyboard motherboard component, and on the other end for the heat sink of the CPU, and the PS side of the metal slot holder.

I then powered it with this (http://www.newegg.com/Product/Product.aspx?Item=N82E16817206001) VisionTek Juice Box VT-450CD 450W SLI Ready CrossFire Ready Dedicated Graphics & CPU Power Supply

Actually even looks pretty nice installed.

20130919_071428.jpg




I've read some bad reviews of rebadged versions of this PSU, but it seems to be working at least initially, and for $20.00 was worth the risk.

If you haven't already, you need to upgrade the Optiplex's Bios to A13 or I don't think it will even recognize the card and boot. Mine came with A5 and wouldn't.

This resulted in THIS Bench mark:

3DMark06+score.PNG


So for $200 for the optiplex, + $160-200 for vid card and PSU, you can have a pretty potent gaming machine capable of running 3 monitors.

And one last thing. Gotta luv how hardware manufacturers never think of use after manufacturing. The spacing on the connectors, which actually is probably the only way it could be set up so that they would all come out one slot, so some forgiveness is in order(and it fired right up in triple monitors, set up correctly. GJ Win7 !), resulted in this, dremmeling on one DVI connector to make it all fit:

20130919_080402.jpg

 
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M

Mr_Smith

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Dec 6, 2013
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10,510



Im trying to do the exact same thing as you, but im stuck at the aux PSU's molex cable. Where do i plug it in? I dont see anywhere on the original PSU. Any issues so far with the aux PSU?
 
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