I cannot speak for "hardware" here,- but I remember, for AsRock Z97 Extreme6 USB3 I had to install drivers,- Intel and AS Media.
Are you sayin´, every Z97 mobo supports a USB3 screen w/o the OS up and running ?
Does your MSI Z97 ?
:-)
A.C. Haven't tried a USB screen, just wondering, maybe BIOS can only see drives and hasn't advanced
to running screens from USB yet. I remember a technicians USB2.0 to DVI port adapter and assume
it worked in BIOS. Now there's USB 3 to display port adapter that self installs like the older one did