Figure: Magneto-Optical (MO) Disk Cartridge

Note: MO disk cartridges come in two sizes: 1.3 GB (Fujitsu part number: CA90002C017) and 2.3 GB (Fujitsu part number: CA90002C031). If you have a 1.3 GB MO disk cartridge drive installed in your system, use only 1.3 GB disk cartridges. If you have a 2.3 GB MO disk cartridge drive installed in your system, you can use either 1.3 or 2.3 GB disk cartridges.

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