As Harry Anderson was a big mac user, I'd imagine it's some kind of macintosh conversion?
Macintosh conversion - Wikipedia
en.wikipedia.org
The stack of devices on his desk are PLI (Peripheral Land Inc.) MiniArray, see below from Mac's Place 1993 Spring Catalog page 36:Two Quadra 700's and a Crimson on the floor.
But there's also a stack of...something. They are branded by PLI but they are way too large to just be disk boxes.
In the book they had a Cray X-MP
The Connection Machines may have looked amazing but blinking light props controlled by a gear shaft (like the Star Trek props) would have been just about as useful. One client had a CM sitting unplugged in the basement because they couldn't get it to do anything.