SUPRDAVE(a)aol.com wrote: Not the thing to look for though as the "1.44" molded in does wear off. The way to tell is with the plate in the lower right cormer of the front of the machine, where it has the type number. IBM has all the old machines listed at IBM Canada at http://www.can.ibm.com/helpware/vintage.html and the numbering is noted in the pages. The 30 (8088) also has a brown base where the 30-286 has a beige base. I have a 30-286 that has 2.88 on the button....is that wrong <g> (I used a salvaged button from another drive that was dead and haven't scraped it off yet).