The ASUS BTF and MSI Project Zero boards are a new type of motherboard that have all of the power connectors on the rear side of the motherboard instead of the front side.
Due to those rear connections, these kind of motherboards will ONLY fit in cases specifically designed for these sort of rear connector motherboards. They will not fit in just any ATX compatible case like a standard ATX motherboard, even though they are only listed as ATX form factor.
North XL RC Charcoal TG - https://www.fractal-design.com/products/cases/north/north-xl/rc-charcoal-black-tg-dark/
North XL RC White TG - https://www.fractal-design.com/products/cases/north/north-xl/rc-chalk-white-tg-clear/
Images below show the North XL RC compared to the North XL and the Pop Air to show the differences in the motherboard mounting plate.
North XL RC - (BTF/Project Zero compatible)
North XL & Pop Air - (Not BTF/Project Zero compatible)
