The type/size of the pwr supply is dependent on your cpu requirements and
the number of components you wish to use.
Your mobo, assuming correct pwr connectors, will not be compromised by the
pwr supply, nor is win* part of the equation.
If your sys case has no room to house the extra hd's you will need an
external hd enclosure.
If you can fit the extra hd's in your case it is likely you will need extra
cooling.
If you are going to the trouble, and I assume expense, of adding 4 hd's you
might want to rethink your options, starting with your sys box, then pwr
supply. At present you seem to be thinking along the lines of a compromise -
or dogs dinner - which will eventually lead to further compromises/expense
should you wish to further modify your sys.
BTW what current disk config do you have, what sizes do you wish to add?
Well I believe that gives you some idea of the system. It's not really very
modern as it came with Windows 98. I do not want to burnout my MOBO by
putting a "better" Power Supply in that it cannot handle. So even though
that page did NOT explain very well what the specs were on the Power Supply
it did give you a good idea of the system for that is what it is. So I
would need to know what would be a "better" Power Supply for that system.
Thanks.