A:Answer This case only supports mini-itx motherboards. ATX and m-ATX will not fit. Also, most/all motherboards from big name (HP, Dell, Acer, etc), pre-built computers are a special size which matches none of the above, and will not fit this case either. I know this question is 6 months old, but hopefully it's helpful to someone out there, because the previous answer provided was completely inaccurate.
