I have an extra Elbox Zorro IV / Winner Z4 busboard, good for anyone interested in towering their A1200. Take a look at a
picture of the board, and read the
specs.
I bought the busboard new two years ago from Amiga Superbit, but I've since ended up with another, so I don't need this one. You can plug a standard AT power supply into the power connectors, and you can also use the Mediator PCI ZIV.
PM me if you're interested.