A PC disk drive that can read both regular 3.5" floppy disks as well as special 3.5" 120 MB disks. Although they are scarce now, they were most prevalent when Imation went on a spree marketing them under the name Superdrive around 1998. Besides the obvious problem of overtaking the established Zip drives, the LS-120 had some other problems. First of all, the 120MB media was pretty expensive stemming from the fact that Imation had little to no competition in making the disks. The other problem came from the fact that drive didn't perfectly emulate a regular floppy drive. For example, you couldn't boot off of it unless your motherboard supported it. Additionally, some kinds of disk imaging software had problems with the drive and would lock the drive (and sometimes the machine) up.