Pavilion a6000n - changing power supply

[blindmouse]

I am trying to change out the prwer supply from the 250 W to 500W and I find that there is a power connection to the motherboard that the new power supply does not have. Thisis a small square shaped 4-pin connection just to the right of the CPU. Can this power supply be used without that connection? I am upgrading my video card to a Radeon HD6750 and the existing power supply won't quite handle that :-)

[old_geekster]

Blindmouse, welcome to the forum.

The connector that you described sounds like it is the CPU power connector.  If you will give us a link to the power supply unit (PSU), we can check to see what connectors are available on it.

[blindmouse]

The PSU is this: Logisys 575W duak SATA, dual fan unit, model PS575XBK

[blindmouse]

an additional reply I have a 4 pin plug on the PSU but it is not a square, I have looked at the other PSU's offered by LOGISYS but while they have a CPU power connection I have know way of identifying if the 4-pin is square or straight. How do I find that information other than going down to my local parts store and opening evry bow there until I find one that fits?

[Big_Dave · Accepted solution]

Hi blindmice,

According to the model Logisys 575 that you posted, the below power connectors are included with the PSU.

If you don't have a P4 connector coming from the PSU then perhaps you have a P8 (8 pin) connector which would indicated a later revision level of the PSU.  If it is a P8, then it can be split or perhaps you can try straddling the P8 so that the 4 end pins of the connector are over the motherboard ATX 4 pin power connector.  You can always contact the PSU manufacturer for confirmation.  You can also buy a P8 to P4 adapter.