I bought the motherboard in the late 2000's to use as a DOS gaming setup, but since moved most of that activity to Dosbox, and for hardware based Windows retro gaming, a suped-up Pentium IV.
Instead I kept the board around to host my various INMOS Transputer host cards, which really only work properly within DOS (there are various Linux drivers, but none [including my own] are really kept up to date).
In late 2020 I decided to rehouse the board in an old AT desktop case that I had stored for quite some time.
The keyboard controller chip (AMIKEY-2) was dead the last time I tried, so I had to desolder it and source a replacement. As well as that, the main 125v/3a fuse was blown - there was no continuity:
Removing and replacing the fuse:
Power on test after fuse was replaced; success!
With those two TRAM carriers installed, that a maximum possible 15 Transputer processors (though I don't, as of November 2020, have enough Transputer TRAM modules to fit in all slots). With the other two ISA slots free, if I source another two TMB08 or INMOS B008 carriers, that's possibly another 20 Transputers, for a total of 35.
The case has an old-fashioned LCD 'speed' display. It reacts to the turbo button being pushed and displays one speed (or set of letters) in turbo mode, and another set in non-turbo mode.
The LCD display board is labelled as a SK-188, fortunately this is a relatively common board and a connection guide is available:
Configured as permanently enabled 133: