for a HP 6330 PAVILION ,i have many P.S.'S but none are small enough to fit this tight case.
this needs to be
6x4 inches on the plug side(or smaller)
4 inches deep into the computer.
say 250 watt atx .
i will pay with MONEY ORDER
These are called micro atx or mini atx power supplies, something like that. They are used in HP's and eMachines among others. I doubt you'll find one that is 250 watt, usually they run from 120-165 watt max.