Pinouts >  ATX, WTX and other standard and proprietary power supply (PSU) cables connectors  >  Compaq pinouts
20 pin MiniFit Jr 5557-20 female (MOLEX 39-01-2200) connector layout
20 pin MiniFit Jr 5557-20 female (MOLEX 39-01-2200) connector
Spare number: 278756-001


1 12v  
2 5v  
3   missing cable
4 gnd  
5 5v  
6 gnd  
7 5v  
8 gnd  
9 3,3v

the measure

was 3,46v.

The rest 3,3v pins

gives 3,31v.

10 3,3v  
11 5v  
12 5v  
13 -5v  
14 gnd  
15 gnd  
16 gnd  
17   missing cable
18 gnd  
19 -12v  
20 3,3v  



The rows of the socket are switched? Pin 11 is 12V. Confirmed with connection of 12V to fan pin and connection of 5V to USB.

According to 2 reports in our database (0 positive and 1 negative) the Compaq Deskpro 2000 PSU pinout may be incorrect.

Is this pinout
Source(s) of this and additional information: Personal measured voltages from my Compaq Deskpro 2000 PSU.
Copyright © 2000-2023 by team, except user uploaded images.
No portion of this webpage may be reproduced in any form without visible link to .
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.