6 pin Motherboard power connection inquiry need help

[Mathews8788]

I have a small form factor HP 6000 Pro core 2 quad, which takes a special 6 pin power connector. The issue is, how can i upgrade the power supply if it requires a 6 pin? Will a standard 20+4 pin work by just using the required amount of pins? Please help me solve this, so i can use my video card.

 

[C12Friedman]

The power supply in the HP 6000 Pro SFF is quite the proprietary device, it does not use a standard form factor nor standard connections. Here's what HP has to say " It is important to
note that HP business PC platforms have not followed the Intel ATX power supply
standard for many years." You would be able to replace it with an identical PSU (HP part #508152-001 or HP part # 508151-001) but upgrading, I don't think that's possible.

In theory you should be able to do what you want (I won't mention fitting another PSU, you can figure that) but you would need to discover* the voltages (which may not correspond to standard PSU voltages) of the inputs and hope a standard PSU can provide those voltages (it can't - see below)

* The HP Power Supplies White Paper states "The operational voltages supplied by this interface are +12V, +12VSB,
and -12V. The +5V, +3.3V, and +5VSB voltages defined by the ATX standard are
generated on the motherboard. The motherboard then provides the +12V and +5V
peripheral power that is traditionally provided directly by the power supply" the 12VSB (standby or always on) isn't available from standard ATX power supplies (which use 5VSB)