ot: how to access hdmi

[fxkl47BF]

i have a asrock q1900 pro3
'https://www.asrock.com/mb/Intel/Q1900M Pro3/'
i have debian 11 running with no problems
the board has vga and hdmi
i am only able to get a display via vga
any suggestions on how to enable the hdmi
i see nothing related in the bios