Took wayyyy too many hours of tech support to find someone that clued in that I had an 8250 uart. A surprisingly crappy piece of hardware on an 486. and that’s why my $$$ 33.6k performed like garbage until I bought a 16550 card.

I also only learned like 5 years ago that crossover cables are unnecessary nowadays. The 10mbit one I made with a bad soldering iron worked surprisingly well.