I always preferred Tandon TM-100 drives. They needed a lot less service and maintenance than the SA400's did. And I always liked having the extra 5 tracks. I've seen a few of these pop up on E-Bay. Unless you have one for him, or someone on the list... eBay may be his best bet. I have 4 40 Track DSDD 360k PC Drives mounted in an old PC Compatible case (XT style), that has a LONG cable coming out the back. I use this for both my Coco and my Model I (when it was working, my EI is shot and while I have an LNW EI, I want a new KB unit as well). The other thing about SA400 drives, is to make sure he isn't using a patched version of TRSDOS or NewDos/80 or whatever... If the stepping speed of the DOS is too fast, the older drive may not boot properly. I remember taking a copy of 80 Microcomputing and applying the patches from it (with SuperZAP) to a copy of TRS-DOS to make it 40 track, and to speed up the drive step. The system booted up MUCH faster. Boy, those were the days... Al