Actually, he’s referring to the “Audio Hardware Setup” option arbitrarily disappearing from the “Devices Menu”…
This has been a long standing (and, as of yet, unaddressed) issue. I, also, would be very interested in whether or not this issue has been resolved in Cubase 9, since it might be a “feature” that could persuade me to purchase the new version (I’m on 8.5.2).