Standalone Mode not outputting video

I recently got my AMD board and planned to use my old mainboard (i7-1165g7) to host some servers for friends. I updated the bios to 3.19 and enabled standalone mode and disabled secure boot. The board seems to boot up and responds to keystrokes (booted into BIOS and F10’d to see if it’d cycle power) but doesn’t seem to output any video display. I have it hooked up via HDMI with the HDMI expansion card. Any suggestions? I’m currently using this in the Coolermaster case, as my Ryzen board is in the laptop chassis.

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Update: Got a USB-C to Display Port adapter and it works fine. Definitely an issue with USB-C + HDMI, even with the HDMI expansion card from the marketplace.