The date on that card is 1990. It may not work in anything later than a Mac II (or IIx, IIcx etc) or with later Color QuickDraw implementations.
I have a similar card (model UC504122) which failed to work for me in a IIci. I put it on one side because I have a choice of alternatives. My card has more VRAM (I think the card in the photo is 8 bit) and has a Bt chip in the large unused space. I do not have the manual for the card unfortunately, but I can provide a copy of the driver disk.
My card was sold for use with high end CRTs -- the packing note has a check box for a 4 BMC video cable -- so I presume it runs at weird frequencies. There may be a key combination that forces the card to scan frequencies on startup.
I have a similar card (model UC504122) which failed to work for me in a IIci. I put it on one side because I have a choice of alternatives. My card has more VRAM (I think the card in the photo is 8 bit) and has a Bt chip in the large unused space. I do not have the manual for the card unfortunately, but I can provide a copy of the driver disk.
My card was sold for use with high end CRTs -- the packing note has a check box for a 4 BMC video cable -- so I presume it runs at weird frequencies. There may be a key combination that forces the card to scan frequencies on startup.