Lots of space, a low slung Mobo mount that allows for ample room for water cooling and fitting components into the case. The 2 chamber design is the best I have used and seen, tons of space for the PSU, cables and accessories like the Hue Plus from NZXT as well as internal USB Expansion hubs and Corsair link features.
https://www.amazon.com/Lian-Li-PC-O11DW-Tempered-Computer/dp/B07F9TC5W7



