A while ago I acquired a VLB graphics card with a WD90C33 graphics chip, the model is Cardex 9212-02 VLB. Apparently, it is known as a Gainward graphics card. This card has a few jumper blocks and dip switches, but I have been unable to find a manual or instructions on what these jumpers and switches do exactly. I suppose they control wait states and different refesh rates at specific resolutions, like on similar cards. Can anyone help me out with more detailed information?
My card looks just like the one in the photo, but is in worse condition. I will need to clean it first before giving it a try.

I have another WD90C33 VLB card already, but could not pass this one up. Nostalgia..... had one in my AM486DX-40 system years ago and it was a really fast card in DOS.