It's a disk for an LS-120 drive.  Imation produced them, but they've been out of production for about four years now.  There were both IDE and USB versions of the drive.  They were also developing a 240MB version that never panned out.\n\nYou may be able to find one on the Internet, or maybe EBay.\n\nNeat technology (the drive had two heads - one for floppies, one for LS-120 cartridges), but behind the curve so they never sold well.  If you have nothing else to do with them, I'd be glad to take them off your hands as there are a few hand-me-down PC at my kids' school that have them.