On Nov 3 2004, 5:40, Bill Pileggi wrote: original CDC full-height drives for the IBM PC. As best as I can figure out, there are 3(!!) jumpers that have to be set on the top board. The Tandon drive is slightly better, there is only 1 jumper. Does anyone have the definative page(s) from the manual(s) or it's equivalent? Bill They're very similar. I should have manuals for both somewhere, and AFAIR both have pretty standard sets of jumpers. What do you want to know? -- Pete Peter Turnbull Network Manager University of York