So i went and get the Apple High-Res RGB monitor (M0401Z) from the basement and tried that now also. Nothing. Nada. So i was really wondering what it then could be. However, i did not found the original cable (might be on large package sealed in the basement) so i used VGA-cable with adapters. So, everyhting pointed to those adapters in my books.

Then i looked for some other solutions and remebered that i got one adapter with the "big conquest" some weeks ago. Find it and... VOILA! We have a winner! At first it gave only black/white but by just choosing "millions of colors" we are now running happily 1152x870 @ 75hz!

Now need to figure out how i can have the extention working as it used to hang on it before (or some other). Radiusware software do not work, only flash and display orientation seems to work.

Fantastic card however! No wonder it was something like 2000 usd card at the time.