You need to contact the manufacturer of your motherboard and ask this question.
For something as old as this, when attempting to get an add-on graphics card, you have two choices.
a) try to find a new/current compatible amd or nvidia card. Compatible is the key term here. Some will work, some will not, and some will expect your board to support UEFI (which it may not).
b) try to find an older/used card that still has drivers available from amd or nvidia.
Any recommendation here could or may result in a card that does not work. This effort must be yours alone.
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