As of yesterday I've had two perfectly fine hard drives experience catastrophic failures immediately after plugging in the M3-ATX. In both cases everything was working fine moments before using a desktop PSU. I wrote the first one off as a fluke but with the second failure occurring under the same circumstances, it is fairly obvious that it is a problem with the M3-ATX.
The M3-ATX may work fine with this board, but at this point, I wouldn't recommend using the M3-ATX. I hope that Mini-Box rectifies this but I have not heard back from them yet.