OK I have a pretty budget gaming computer and I want to get a cooler master centurion 5 II case. It supports Micro ATX and standard ATX Motherboards. I know that ATX is 304mm x 244mm and micro ATX is 244mm x244mm, But the thing is, mines 305mm x 220mm. It's like an ATX with 44mm shaved off the side and uses 6 screw to fasten to the case. My motherboard is a Foxconn P55A 1. outdated but good enough for me.
So what form factor is it?
sorry about it being in the wrong sub-category but the others aren't any closer