Original: The SuperDisk , sometimes marketed by as LS-120 and a later variant LS-240 , is a high-speed , high-capacity alternative to the 90 mm ( 3.5 in ) , 1.44 MB floppy disk .
Simplified: LS-120 or SuperDisk is a high-speed , high-capacity alternative to the 90 mm ( 3.5 in ) , 1.44 MB floppy disk .