The NCR PC4i was a rather ridiculous example of love at first sight, and i paid accordingly! I purchased it via gumtree and after calling the seller and convincing myself that he was legit, i had it shipped from Perth to Adelaide. i still think it is a beautifully crafted and technically excellent IBM PC compatible.
This machine has monochrome CGA graphics. The motherboard, together with the ISA cards, is in a cage that is removed from the rear. Considering the all-in-one package (like a compact mac) everything is remarkably accessible.
I maxed out the memory to 640k and added serial I/O, game port, an ethernet card, and an XTIDE board. It happily connects to my network and can be accessed via FTP.