Is this motherboard compatible with my case?

I can't really tell because the five sites I looked at didn't state the form factor of the Acer motherboard.

It's possible that it has a non-standard, Acer inhouse designed motherboard and/or case internals.

You might be able to make the determination if you open up the Acer and take measurements of the mounting holes and backplane size and location on the mobo and then compare it to the ATX standard which can be found with a web search.

The next item to check is the PSU. If it is a non-standard form factor then it could also use non-standard connectors to the PSU in which case you would need to replace the PSU also if a standard one will fit in the case and align with the mounting holes and opening.