This could be very useful to run really old PC tied commercial and industrial equipment. There is a surprising amount of old systems still keeping our lives running in small niche ways. It could be:

• your school system’s ancient HVAC system
• an old electron microscope in a biology or materials science lab
• an old pc based CNC mill

The fact that this has all the legacy ports of:

• IEEE 1284 parallel printer port
• RS-232 serial port
• a 16 bit ISA slot breakout!

…gives this some of the newest hardware I can think of that still interfaces with old ancient hardware.