HP Z210

I'm unable to, after searching over 180 pages on HPs site, find a single driver or bios for the z210, in fact my z400 and 8540w i couldn't find anything for either. Wasn't sure where to post this but i need a bios update for the z210 and i have a feeling that their support isn't going to...

Im considering upgrading my psu in my z210, but it uses a non standard 18 pin rather than a 20/24 pin. It is also limted to 400w as far as i can tell. Now i know i'll need to drill new holes for a larger psu, not a big deal. but i can't find a 20/24 pin adapter that is compatible with the...