I'd suspect that any modern motherboard is going to require a fair bit of tweaking to get into the 9500 case. Frankly why would you want to? The 9500 is pretty evil as cases go and not friendly for upgrades. If you want to go the modding route then I'd suggest a B&W G3 case as I've found them great to work in. You may well find a buyer willing to pay more then $10 for the 9500 as they are nice for high end beige machines and then stick the cash into something a little more modable.