So what has the card been sesigned for 
Looks like a scandoubler for an A2000. Would pull a base NTSC or PAL frequency into range of a VGA display.
Doesn't support AGA or ECS screenmodes, though, according to the description. So if you need to display a basic 16-color workbench on a VGA display, that is your card. Otherwise, it doesn't seem to have much use in a more modern system.
