here are some photos of it. (taken by GH user Parak) There are some interesting bits about it, but it's all model F.
The case is larger than that of the normal PC/XT model F, and it has three stage feet. It is sometimes called "the "bigfoot" because of the larger footprint.
Unfortunately there's not a real controller onboard. IT does not output XT/AT/terminal or any other scancode set.
Fortunately, soarer figured out how to make it work with his controller code. You can find out more info in the topic.