Here's mine That I purchased off ebay. This one is a different model no (HP/Compaq Proliant DL380 G4 575w Power Supply, 406393-001) than the one tjinguy talks about here on this page.
but it's not the same pin configuration to turn it on. I did notice some voltage differences 1 to 2volts increase when I changed the pin configuration but it performs better with the one here from xandrios
These units are quieter
than the HP dps 600p bb that are mentioned in the above web-link (tjinguy) and fan sits lower to the blades as to the other model where they sit higher. They get warm but not hot as they have a huge heat sink towards the end of the power plug.
these can handle loads upto 50amps But warning
input and out wires get very warm
This should be enough for PL8 AND Cellpro 10 at normal 2c charge rates