Thanks to @NeshireChoir I finally got the Rasterops Accelerator a 12" NuBus card. Looks like Rasterops made 2 versions, I and II in the same year (1990). I have version I and found quickly what was wrong with version I. It was not designed to be put into compact Mac II like IIcx or IIci. The top...
hm, me too never heard or read about bracket ... the above link doesn't open for me. I had it in Q700 and Q950 in vertical position, never had problems with it. Anyway you need to shut down to turn the card ON/OFF, simple restart does not work.
Well the beta 7.7 is already available here:
https://www.macintoshrepository.org/8155-mac-os-7-7-beta-7-7a2c5-a-k-a-8-0a2c5-
More info here
https://apple.fandom.com/wiki/Mac_OS_7.7
Only Radius has led lights no other card. The PhotoPro should load an extension icon at startup.
I would not use all the card at the same time, first the power, second the extensions conflict.
what nubus cards do you also have installed? what does the icon of IP Mgr look like at startup? is it crossed? If you put the thunde card out of computer the control panel should open without problems if not the drivers are corrupted