Need help with Dell Dimension 2400 MoBo

[jjaj823]

Howdy all...

I am trying to stick this Dell Dimension 2400 MoBo into an old eMachine case that I have laying around. The problem I am having is with the power button connection. The old eMachine uses a 9 pin, single row of connectors grouped in sets of 3 pins each. The dell, however is 9 pin in 2 rows: one of 5 pins, and one of 4 pins.

I am wondering if anyone can tell me what each pin does on the Dell, so I can match them up with the pins on the eMachine, or perhaps there is an adapter available? Any help would be appreciated...I am getting frustrated. Thanks...

-jj

Oh, and the eMachine is a VERY ancient eTower 500i. I am just trying to use the case.

[EOD]

Originally Posted by jjaj823

Howdy all...

I am trying to stick this Dell Dimension 2400 MoBo into an old eMachine case that I have laying around. The problem I am having is with the power button connection. The old eMachine uses a 9 pin, single row of connectors grouped in sets of 3 pins each. The dell, however is 9 pin in 2 rows: one of 5 pins, and one of 4 pins.

I am wondering if anyone can tell me what each pin does on the Dell, so I can match them up with the pins on the eMachine, or perhaps there is an adapter available? Any help would be appreciated...I am getting frustrated. Thanks...

-jj

Oh, and the eMachine is a VERY ancient eTower 500i. I am just trying to use the case.

I looked around for you and found this for the Dell Dimension 2400 pinouts:

Source

I did some testing and found these to be the pinouts from the audio/USB
header
Forgive my terrible ascii art

RD YL Bl Bl GY YL OR RD
--------------------------------
|\ |\ |Ri|Le||gn|gn|da|da|da|da|
| \| \| +| +||d |d |+1|-1|+2|-2|
--------------------------------
|\ |sg|\/|sg|mi|mi||+5|pw|pw|\ |
| \|gd|/\|gf|c |c ||v |+1|+2| \|
--------------------------------
BL BL OR BN GN WH BN

Signals are inside, colors outside

Audio Connector
---------------------------------------------
|gnd| x | x | x | x | x |mic| L+|mic| R+|gnd|
---------------------------------------------
BL BR YL OG RD BL


wh yl gy bk
---------------------
|pwr|dat|dat|gnd|\/ |
|1 |- 1|+ 1| |/\ |
---------------------
|pwr|dat|dat|gnd|usb|
|2 |- 2|+ 2| |+5v|
---------------------
bn rd or bk gn

I found that removing the green wire from the USB header made it work
with a normal USB header on the New Motherboard.

I also found that removing the brown jumper wire from the
power/hd/pwled which went from pins 5-9, this allowed the Intel board
to use its pinout directly.

/-bn\
gr bl | |
----------------
|hd|hd|jp|\ |jp|
|+ |- | | \| |
----------------
|pw|pw|pw|pw|\/|
|+ |- |sw|Sw|/\|
----------------
rd wh bl or

Hope this helps someone else.

Then trace the eMachine's wires back to their respective switches. Once you have them matched up, it will be easy. The colored wires are the +, while the white wires tend to be the -.

Good luck.

[jjaj823]

Thanks for that....Its the best info I have to go on as of yet! I will try and decipher them into something a little more legible tomorrow . This is not exactly what I was looking for, though, as I need to figure out how to turn the dang thing on !!!! From this it would appear as the pin layout is as follows:

1234X
56789

where X = empty pin

Is this correct?

Thanks again...

- jj

[jjaj823]

Found it!!!!!!! Got it from
http://www.motherboards.mbarron.net/...c.php?=&p=1255.

Has it all nice and neat! Thx EOD for jump starting the process...I (and by that, I mean my wife) appreciate it.

[Robmain]

I had/ have the same problem. Found POWER and HDD LED by myself. The rest what is shown in your link) is not working. Even Dell Chat support could not or want not help.

I remember, when I deinstalled the board from the original Case there was a bridge-cable in the plug. What has to be shortconnected?

Thanks for your held in advance. And sorry for my english.

[DallasDon]

most front panel connectors with a 4 x 5 pin configuration are intel compliant, and are all the same.

The "nine" pin is missing, and is the "KEY" to orientation, no matter which way the pins are situated on the board.


1 3 5 7 X
2 4 6 8 10

1= HDD LED+, usually green
3= HDD-, usually white or black

2= PWR LED+, usually red
4= PWR LED-, white or black

These are polarity specific, and must be connected to the proper + and - terminals to work properly


5= PWR
7= PWR

9 is missing, can be used to determine location of other pins

6= RESET
8= RESET

Thes are momentary contact pins, can't get them backwards

Pin 10 is typically not used, an additonal ground pin.

[hadronuk]

In my Dimension 2400, pins 9 and 5 are shorted together so that the bios identifies the system as a Dimension 2400. Without this link it identifies as an Optiplex 160L. Obviously the same mobo was used for both machines.

[hadronuk]

Originally Posted by hadronuk

In my Dimension 2400, pins 9 and 5 are shorted together so that the bios identifies the system as a Dimension 2400. Without this link it identifies as an Optiplex 160L. Obviously the same mobo was used for both machines.

CORRECTION
Sorry, That should be pins 6 & 10 are shorted. Depends on whose numbering system you use!

[osprey4]

That's a lot of work for a 2400 motherboard. Not one of Dell's crowning achievements.