How do I get my poweredge t440 to see my installed graphics card?

The integrated graphics card is starting to have issues.  The display is showing a blue color and it wont accept video resolutions that used to work fine in the past.  When I bought the T440 many years ago I installed a PCI graphics card in it, but the system doesn't see it.  Unfortunately, without shutting down the system and opening it up I can't remember what card I put in it.  When I boot Linux (Fedora 41) and run lspci all it shows is:

03:00.0 VGA compatible controller: Matrox Electronics Systems Ltd. Integrated Matrox G200eW3 Graphics Controller (rev 04)

What do I need to do to get the system to see the other graphics card?

This system has a 450W power supply.

Paolo