older & cheaper parallel port version PC-2-NEO: MVS/AES only -> it's not for development - up- & download gamesaves - dump and upload ram (64k) for debugging & research.
newer usb-version: NeoGeoCD universe only -> makes the CD system a good development testing tool for small game projects - up- & download gamesaves - dump and upload ram (64k) for debugging & research - switch to special MVS bios and run a game in MVS-enviroment (1024 P1, 128k s1, 128k m1, 2048k v, 4096k c)