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What's the pinout for a PSU with BOTH 24 and 20 pin connectors?


Riyock
Resolved

Likes # 0

Hi all,

This is my first post so please forgive if I'm posting in wrong place, etc.

I am trying to figure out the pin-out of my PSU as I want to test to see if it is working properly. Am confused by the connectors it has.

I have a Dell Precision T5400, which has an EATX format mobo. On this mobo there are two PSU connections: P1 which is 24 pins and P2 which is 20 pins.

The PSU I have is an 875W unit which has the 2 connectors mentioned plus 1x 4-pin mole and 2x 6-pin connectors:

http://izupa.com/index.php/power-supplies/dell-precision-t5400-875w-power-supply-w-harness-yn642.html

My PC won't boot, but there appears to be some power to the mobo, so I think that either it's the PSU or the mobo which is faulty. If I know the correct pinout i should be able to test with a multimeter?

Unfortunately I can't find anywhere on the internet information about my type of PSU, it seems most ATX types have either a 20 or 24 pin connector not BOTH OR at least those are the only articles that pop up during a Google search.

Would really appreciate any help on this. Thanks in advance!

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bumpkin

Likes # 1

Just enter "ATX pinout" into your search bar and you should find something that will give you the colour codes and voltages then you can test it with your meter.

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T0SH

Likes # 1

If you go here you can download the manual for this machine

http://www.dell.com/support/troubleshooting/us/en/19/Product/precision-t5400

download the user manual and look in the adding and replacing parts section for power supply dc pin assignments

Cheers HC

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Riyock

Likes # 0

Thanks TOSH, that is exactly what I wanted!

Also after testing with my meter I realised that the colour coding is the same as what is used for a standard PSU - so that helps too.

Cheers

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