Awhile back, we were talking here about some of the Dell power supplies
having proprietary pinouts on the ATX power connector.  I finally came
across a listing of the Dell pinouts, and will pass this along for
general information.

This info comes from the 15th edition of Scott Mueller's book -
"Upgrading and Repairing PC's."  I copied it down best I could, but
I've been known to make a typo boo-boo and so have Mueller/Que
publishing - - so don't take these as authoritative, but the general
picture of broad deviation from the ATX standard is clear.  Mueller
mentions frying components by plugging in the wrong power supply.  I
think his case was std PS to Dell system, but looking at what goes where
across the standard pinouts,  there are a lot of possibilities for
problems there.  Best case, PS would shut down before destroying either
itself or a mainboard.  Worst case,  PS or mainboard could die by
frying.
Good luck - - -  JimH.

Both PS's use a STANDARD ATX 20-Pin POWER CONNECTOR

PIN          DELL             STANDARD
        COLOR   SIGNAL   COLOR   SIGNAL
1       red     '+5      orange  '+3.3
2       black   gnd      orange  '+3.3
3       red     '+5      black   gnd
4       black   gnd      red     '+5v
5       orange  pwr_good black   gnd
6       purple  '+5VSB   red     '+5V
7       yellow  '+12     black   gnd
8       blue    '-12     grey    PWR_good
9       black   gnd      Purple  '+5VSB
10      black   gnd      yellow  '+12V
11      grey    PS_ON    orange  '+3.3
12 black gnd blue '-12V
13 black gnd black gnd
14 black gnd green PS_ON
15 white '-5v black gnd
16 red '+5v black gnd
17 red '+5v black gnd
18 red '+5v white '-5V
19      key (blank)     red     '+5V
20 red '+5V red '+5V
  Aux 1 black gnd black gnd
  Aux 2 black gnd black gnd
  Aux 3 black gnd black gnd
  Aux 4 blue/white +3.3 Orange  '+3.3
  Aux 5 blue/white +3.3 Orange  '+3.3
  Aux 6 blue/white +3.3 Red     '+5V
    
COMPARISON BY SIGNAL TYPE (Leaving out the STD AUX connector)    
        DELL            STANDARD
 COLOR SIGNAL COLOR SIGNAL
 key (blank)   - - -   
 yellow '+12 yellow '+12V
 blue/white '+3.3 orange '+3.3
 blue/white '+3.3 orange '+3.3
 blue/white '+3.3 orange '+3.3
 red '+5 red '+5v
 red '+5 red '+5V
 red '+5v red '+5V
 red '+5v red '+5V
 red '+5v  
 red '+5V  
 purple '+5VSB Purple '+5VSB
 blue '-12 blue '-12V
 white '-5v white '-5V
 black gnd black gnd
 black gnd black gnd
 black  gnd black gnd
 black gnd black gnd
 black gnd black gnd
 black gnd black gnd
 black gnd black gnd
 black gnd  
 black gnd  
 black gnd  
 grey PS_ON green PS_ON
 orange pwr_good grey PWR_good



... "Bother!" said Pooh, as he saw the sparks and smelled the smoke.
--- MultiMail/MS-DOS v0.32