Motherboard's official site
https://www.asus.com/Motherboards/ROG-MAXIMUS-XI-GENE/overview/
This motherboard has an 244mm (length) x 226mm (height) 3-slot MATX form factor.
From this picture, I think it should be able to fit in NCase M1.
But in order to install this motherboard, we need to dismount the original PSU bracket and DIY a custom PSU bracket inside the enclosure towards the front.
This motherboard has two slots:
Slot-1 for PCIe x4.
Slot-2 for PCIe x16.
That means we can only choose <279mm 2-slot VGA card to put it on NCase M1's Slot 2-3.
https://www.asus.com/Motherboards/ROG-MAXIMUS-XI-GENE/overview/
This motherboard has an 244mm (length) x 226mm (height) 3-slot MATX form factor.
From this picture, I think it should be able to fit in NCase M1.
But in order to install this motherboard, we need to dismount the original PSU bracket and DIY a custom PSU bracket inside the enclosure towards the front.
This motherboard has two slots:
Slot-1 for PCIe x4.
Slot-2 for PCIe x16.
That means we can only choose <279mm 2-slot VGA card to put it on NCase M1's Slot 2-3.