Computer parts

MO drives

Magneto-Optical (MO) drives have been the first attempt to save computer data optically. Their advantage over magnetical storage is the media's resistance to electricity, water and dust. MOs use a laser to read and write, and they are rather expensive for that reason.

Olympus MOS 350 E magneto-optival drive

MO drives only differ in their capacity; they all come along as SCSI devices. Older-generation MO drives save 128 MB on one disc, modern ones 230 MB.