| http://www.w3.org/ns/prov#value | - The personal computer 20 further includes a hard disk drive 34 for reading from and writing to a hard disk, not shown, a magnetic disk drive 36 for reading from or writing to a removable magnetic disk 38, and an optical disk drive 40 for reading from or writing to a removable optical disk 42 such as a CD ROM or other optical media.
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