magneto-optical drive

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magneto-optical drive

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The instructor's console includes a magneto optical (MO) drive, which stores up to four hours of classroom dialogue on a single MO disc.
MO discs used come in 3.5" and 5.25" formats; the 3.5" disc, for example, can hold from 120MB to 130MB of data--not bad for something that slips easily into a shirt pocket.
Floptical media only hold up to 40MB as compared to the heftier MO discs mentioned above.