Please identify this mystery board

Or at least close to it.. but you're on the right track (ugh..), for sure! FWIW, I have a pair of Shugart 801 here, serial on one unit is 217XX for reference. There are several obvious differences between the pictured board, and the board installed to this sample 801. The card-edge cable connectors on opposite ends of the boards do match up correctly, so the basic board layout seems to be the same between both of them. But my board has a motherboard style header / jumper control arrangement vs. a DIP-switch. Also, the 90' bent-header cable connectors on the "front" end of the boards, nearest the drive slot - have more pins on my board. So it seems like it's certainly an 8" drive controller board, and Shugart origin would be a very well-informed guess. As to 801, or 8XX series, variants etc. - well, that's a little more in the weeds. But you've got some good clues, and if you need any more data / pics of my drives, I'd do my best to oblige. On Fri, May 9, 2014 at 5:47 AM, David Griffith <dgriffi at cs.csubak.edu>wrote: