Well, mine's a PA5G1M-20 (8.5x10x30", 9" platters) and it has its own auto-solenoid, which is easy to see. Just look on the platter case for a silverish round thing about 1.5". You should see it has a two wire connector and can be unscrewed from the mounting plate w/ a twist. I belieeeeve that FSD's are just small SMD's. They seemed to have the same cabling as I recall. I couldn't find info on the PA5G1M anywhere so I found another number on the unit, "97150-340 FSD-340" and that seeked to a Seagate (guess they bought out CDC SMD's), here: http://www.mm.mtu.edu/drives/seagate/smd/st6344j.txt Here it says this FSD is a SMD. Perhaps your drive is there... first get the other model number. And we wonder why we subscribe to this list. John A