I noticed this HP 82901M dual DSDD HPIB drive up for auction: Ebay 263475746952 This would be a good match for an HP85/87 micro that has the HPIB cartridge and storage ROM, or a standard 87XM. No connection to the seller, and no idea if it works but it looks clean. These units have Tandon TM100-2 drives installed. Mike Loewen mloewen@cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/