Does anyone know what kind of power supply connector this is?

[qkrwogud]

I'm turning an HP desktop into a gaming computer and I need to replace the PSU. There is no 20/24 pin ATX power cable going into the motherboard, only these but I've never seen the one labeled P2:

Oddly, the SATA power cables come from the motherboard not PSU. I'm guessing this unknown cable + the 6pin provides enough power to the motherboard so it can power the SATA ports. So if my theory is correct, because my new PSU will supply the SATA power, that unknown cable will not be needed to provide the extra power.

Does my theory seem correct, can anyone shed any light on this?

 

[bmockeg]

I would recommend you just buy a new setup.

 

[richiestang_78]

Can you find what motherboard it is?

The motherboard may be a proprietary board that doesn't use standard connectors, meaning you will be limited to whatever HP PSU you have or can find. If the board has a good CPU then just pull it out, buy a decent new motherboard (sadly you will need a new copy of windows if you don't have one) and build up from there.

 

[ko888]

What's the HP Desktop Model?

That P2 connector is used to turn the power supply unit on or off and to control and monitor the power supply's fan speed.

The power supply in these HP systems only supply +12Vmain, +12Vcpu, -12V and +12Vsb power. The motherboard has VRM buck converters that supply lower voltages (i.e. +3.3V and +5V) for other devices like USB devices, SSDs and HDDs.