Supports up to SSI-EEB motherboards
Includes 2 x Air Penetrator 184i PRO fans for superior air intake
Supports 360mm liquid cooling radiator
8 PCI expansion slots
Reserved sliding rail mounting holes for quick rail installation
Includes one USB Type-C interface
Upright or horizontal placement flexibility
Secondary PSU can be installed if 3.5" drive cage is to be left unoccupied
Has support for the taller 40 series cards where 4u cases can't clear the 12VHPWR. Otherwise you're better off with the RM44. Neither come with the sliding rails.
A showcase from GN is the only coverage I could find.
Why this and not an atx case?