i have been looking having separate hard drives for boot drive and DAWs, project backup, sample libraries and a satellite computer to run plugins to reduce CPU load on the boot/DAW drive.
https://www.waves.com/hardware/soundgrid-server-one
https://www.kvraudio.com/forum/viewtopic.php?t=370180
Recording lounge podcast and host Kendal Osborne uses a custom PC and recommended this site:
https://pcaudiolabs.com/ for purpose built computers for music production and years ago, they supplied parts too, parts that are supposed to be quiet. i think computers are getting quieter in general. anyhow, here is their comparable case:
https://pcaudiolabs.com/rok-box-ob-1-hotswap-drive-rackmount/
i have a concern with the price though, so i was thinking of ways to quiet the case you listed, just in case. i was thinking of glueing gypsum board to the outside with holes for air, of coarse, if there is a problem
have you looked at this mother board for $80 more,
https://www.amazon.com/dp/B01NBHXSP6/?tag=tonymacx86com-20
it might save in the long run because it has 4 USB 2.0, 4 USB 3.0, 1 USB 3.1 type C, 1 USB 3.1 type A, 8 channel audio, what looks like optical, clear CMOS and BIOS flashback.