TDK Life on Record Magneto Optical 3.5" media offers the benefits of a proven technology along with industry-leading quality. Rugged cartridge design and a precision recording material formulation ensure the lowest possible error rates. TDK Magneto Optical 3.5" media is well-suited for a variety of applications, ranging from desktop publishing to critical file backups. TDK Magneto Optical 3.5" media is available in 230MB, 540MB and 640MB capacities, and compatible with all ISO standard MO 3.5" drives.