How to align a micro-ATX mobo inside an ATX case???

Im trying to mount a micro-ATX mobo inside an ATX case. When I lay the mobo inside the ATX case, the cut outs in the case wall do not align with the connectors on the edge of the mobo. I am not even sure if the expansion slots in the mobo will align with the card slots in the case wall. Short of taking a Dremel saw and simply cutting out a large metal rectangle from the case wall to expose all mobo connectors, is there any way to adapt the ATX case to the micro-ATX mobo, or should I look for and buy another case that will allow a “drop in” fit where all the case cut outs align perfectly with the mobo connectors? (if such a case exists)?

It has nothing to do with Micro ATX, the problem is the nut behind the keyboard.

If the case has a removable port plate, remove and replace it. If the case doesn't have a removable port plate, then even a full ATX version of the same board won't fit.

Basically, there were some OEM cases that supported only a certain port location. Motherboard makers have come out with hundreds of port layouts, leaving behind the old standard locations. They include a replacement port plate, which works in replacement cases, but often not in OEM cases.

If your case doesn't support replacing the port panel, well, you have a couple options: Cut a rectangular hole in the case, or buy a board with the same exact port layout. Even a Micro ATX board with the same exact port layout would work.

If you want specific advice you'll have to list your case model.