Cray X-MP SuperComputer ELC Board. Original Factory set. Otherwise, to sell it n Lucite, I would separate the two board from one another to make them individually like a single board. Different layouts of various kinds. This was Steve Chen after re-engineering the Cray-1 with up to 1.8 times the computer power while Seymour Roger Cray was working on a long product for 5-6 years on the Cray-2. It wasn’t a conventional to cooler it down, it used 3M Fluorinert liquid to cool down the 8 daughter boards. The Fluorinert didn’t short out the electronics.