I'm pretty sure that my tower case will phsically accept a decently modern mboard. It's designed to take full ATX size, the mboard in at the moment is a bit smaller than that length-wise, and it will, I feel sure, fit a minATX mboard. I'd have to get a new ATX PSU with the more up-to-date power connector for modern mboards. But something troubles me. The case (about 11 years old) has a mechanical on/off push button. Also a mechaical "sleep" push button. There is a LED for "HDD" and a LED for "sleep". I'm not sure if I need to post pictures of the wiring and plugs associated with the above, but anyway can anyone say whether I've got a major "difficult to solve" problem here concerning a mboard made say during the last 3 or so years? (I'm wanting to buy a mboard of about, well, say 2.0 - 3.0 Ghz speed, with PCIe, that could be used as a workstation).TIA.