IF and that is a big IF it still works, yes it can be used with a CoCo. The first version of the disk controller needed 12 volts, but that has nothing to do with the drives. Bruce W. ================== ----- Original Message ----- From: "Spencer via Coco" Hello All. Can a Coco expert tell me if a 26-1164A will work with the Coco2 or Coco3 system? Thanks, Spencer