< > Take the case off, and look for a number like 8x-xxx-x on one or more < > chips on the motherboard. The last x may be a letter (probably A) or < > or might not be there at all. Kaypro's part-numbering system was rath < > erratic, it seems. < > < > * 81-240 original (1983? maybe 1982) Kaypro 4 < > 81-232 1983 Kaypro 4 < > * 81-184 1984 Kaypro 4 (a.k.a. Kaypro 4'84) < > 81-292 1984 Kaypro 4 (newest ROM version for this < > # 81-296 Kaypro 4X (with super-high-density floppies) < > 81-146 character ROM < > 81-187 character ROM < > 81-235 character ROM What blows that all to dust is a machine like mine. The box is kaypro-1 (81-021) written all over the outside but, the board is apparently 4-84 and it's equipped with handyman, Advent turbo rom and a 2mb Ramdisk. I tell people it says kaypro-1 (number 1!) and they say two full height drives with slots horizontal but, mine has two half height two sided drives mounted vertical. Apparently it was a 56, 57, 58, 59, 60 Fochevromercysler! Allison PS: Fochevromercysler was one name given to a a mishmash of engine, transmission body, suspension parts that came from Ford, Chevy, Mercury, Chrysler. Seems a friend of mine had no loyalty to any one car.