[SOLVED] how to arrange a ATX 24pin to Motherboard 2-port 6pin adapter Power supply cable

[Kasmil]

i have an ATX 24pin to Motherboard 2-port 6pin adapter Power supply cable and it has a "GREEN,WHITE,RED AND BLACK". Can anyone tell me which wire is +12v, Gnd, and sense

 

[jonnyguru]

Pictures or link to product?

Your description is weird. Is this one of those adapters so you can use a standard ATX PSU on an HP or Dell?

 

[Kasmil]

 

[Kasmil]

This is a cable which i bought and i want to use on hp elite desk 800g1 twr

 

[jonnyguru]

I thought you already had that plugged in and working.

Not sure why you need to know the pinout. If it was wrong, your HP wouldn't be booting up. ;-)

 

[jonnyguru]

Not sure why you need this, but I think I have this.....

Yellow is +12V. That's a given.

The purple is a +5VSB that gets converted to a +12VSB . That wire should go to a little lump in your cable harness wrapped in electrical tape.

Gray is PWR Good. Green is PWR ON. Blue is -12V.

Black is ground. Always ground.

So that tiny white plastic piece doesn't use pin 1 and 2. Pin 3 is PWR ON, 4 is PWR OK, 5 and 6 are both ground.

For the black 6-pin that looks like a PCIe connector but definitely IS NOT, pin 1 (lower left pin if looking at connector with latch on top) is ground, as is pin 2. Pin 3 is -12V. I'm REALLY curious what HP uses -12V for. Pin 4 and 5 is +12V. Pin 6 is the +12VSB from the little converter in the electrical tape.

Oddly enough, there are NO sense wires used here.

EDIT: By the way, this will not fix your 515 error. The connector coming from the old PSU to the motherboard is not included in this adapter harness because a tachometer is not a normal function of a PSU fan (unless it's a digital PSU, but that's a whole other ball of wax). That was a completely separate connector from your old PSU.

 

[jonnyguru]

You know... I've looked at a dozen pictures of these HP PSUs and boards and I can't figure out HOW the PSU reports fan RPM to the motherboard! There's no extra wire for it. The two open pins on that small, white 6-pin connector is NEVER populated, so it's not like they use one of those!

Really weird.

Do you still have the original HP power supply? Can you take a picture of all of the connector that come from it?

 

[shaibeny]

i have an ATX 24pin to Motherboard 2-port 6pin adapter Power supply cable and it has a "GREEN,WHITE,RED AND BLACK". Can anyone tell me which wire is +12v, Gnd, and sense

Hello, Did you solve this ?
I am thinking of buying the 800 g5 tower. But it will come with a 250w psu . I have a 4 years old 500w 24 pin psu . It can deliver 36A on the 12v rail . I use it on an old HP dx7400 ( that has standard 24pin psu originally) because a graphics card needed 20A on the 12V rail and the original psu delivered only 19A . ( I know the G5 800 tower 500w gives only 16A on the 12v rail)
What do i need to do buy in order to convert a 24pin psu into this strange motherboard ?