Roderick,
Yes - the BIOS configuration utility is visible with this non GPO card - what you get when you press the DEL key while it is booting. That utility is completely graphical with mouse support.
You can also press F11 on boot-up to get a list of "drives" to boot from. This list is a subset of the drives recognized by the BIOS. On this machine you "suggest" which mode, UEFI or CSM, you want to use by:
1) configuring a UEFI/CSM or CSM/UEFI in the main BIOS settings menu/utility,
2) picking a drive that is listed as UEFI, or a drive that does not have UEFI next to its name.
So every drive on the machine is listed twice in the main BIOS screen: once with UEFI label and once without. Since the F11 boot device list only lists a small number of drives you have to configure in the BIOS utility which drives will appear in the boot-device list that is displayed with F11 at boot. That all works with the non-GOP graphics card.
As an aside - this means that to use the new AOS UEFI boot manager you have to install that on a drive that you will boot as UEFI. To use AirBoot you have to put that on a drive that is listed as non-UEFI. So if you want to dual boot to two operating systems, one using UEFI and one using Legacy or CSM, you would have to put those operating systems on separate drives and use the BIOS supplied F11 boot menu.
By contrast, on my Lenovo T530 I originally installed AOS 5.01 and Win 7 as dual boot on the same drive. When AOS 5.1 came out I replaced the AOS 5.02 installation with AOS 5.1 installation. To move between the two I go into the BIOS in the Startup section and change the Boot First entry from to LEGACY FIRST to get boot Win7, or UEFI FIRST to boot AOS 5.1. When I boot LEGACY first I get the Airboot menu (from the previous AOS 5.02 install) and chose Windows 7. When I boot UEFI first I get the new AOS boot manager menu and chose AOS. If I chose AOS from the AirBoot menu it will boot into AOS, but with lots of errors about not being able to load drivers.
My conclusion from building this Ryzen 5 machine is computers are a LOT more complex now than the used to be when I did my last build.
As for booting on the Ryzen 5 machine with the AOS installer media plugged in adn the non-GPO grahics card. (I am doing this from memory)
You get the logo,
Then you get the boot from hard drive or install media (or whatever that choice is)
Then you get the Boot with defaults or Configure choice. If you pick configure that screen shows up and works - meaning you can configure stuff.
If you choose boot with defaults, or you configure and exit, the screen goes blank.