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PostPosted: Thu Nov 13, 2014 7:04 am 

Joined: Thu Nov 13, 2014 6:30 am
Posts: 1
I am a 16 yr old who is doing a computing course at college.

I took apart my granddads computer as practice for the hardware section of my course.

The problem I have, is that I can't remember where the cables go on the motherboard. The cable that i'm having trouble with are
-Power SW
-Reset SW
- -P.LED
- +P.LED.

The layout of the pins where they should go are in 2 segments.
The X's represent the pins, and the O's represent the holes.

Segment 1:

Segment 2:

If anyone can help, please do. If not don't worry. It was an old pc which was meant to just be taken apart then taken to the rubbish dump. When i started to take it apart, i was never intending to put it back together.

The only reason i wan't to put it back together is so i can place a new hard drive in + upgrade the ram. So then i can use it for my college course work.

If you read this post, thank you for taking your time to read it.

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PostPosted: Thu Nov 13, 2014 11:45 am 
Mobo-fu Master
Mobo-fu Master

Joined: Wed Nov 12, 2003 11:57 am
Posts: 20851
Location: 07438
Welcome to
On most motherboards, there is a small diagram of what the front panel pins are for. May be right at the header, or nearby.
But not all headers are designed for the same pin function. Knowing the motherboard brand and model would help in determining the pin functions.
As to giving it "new" life with a new hard drive, the capacity of the drive is relevant to the BIOS age of the motherboard. Some dated more than 15 years ago could accept only a 20 GB hard drive! But a larger hard drive can be partitioned into acceptable limits of the BIOS. Depending on hardware of the system, you may not be able to install newer than Win XP on it.
Post more details of the system.. that will help provide suggestions.

F@H.. to solve mankind's maladies.. in our lifetimes!

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PostPosted: Thu Nov 13, 2014 12:21 pm 
Black Belt 2nd Degree
Black Belt 2nd Degree

Joined: Mon Aug 09, 2004 7:33 pm
Posts: 2740
Location: Milwaukee - Wisconsin
do you know the model/manufacturer of the board?

can you take a picture of the board/wires and put it out on a site like photobucket?


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PostPosted: Thu Nov 27, 2014 8:36 am 
Black Belt
Black Belt

Joined: Tue Jun 12, 2007 10:47 am
Posts: 721
Location: Havana, Cuba
if the mobo is not too old the base of the conection pins is color coded, but the color changes from one manufacturer to other.

normally the place for the LED´s conector pins in the mobo have one of them marked with a + in the base of the pin meaning that the positive pin of the led must be conected in that pin. u can by tray an err discriminate what is the HDD Led and what the power LED there is no damage on doing that.

power and reset switches are non polar, U can follow the try and err method to determine what is what.

there is no way to make any damage to the board conecting the wrong conector or even conecting in the bad polarity

good luck


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Things they would not teach me of in college"
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-The Police-

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