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Opening the CD-ROM drive, DVD-ROM drive or the other
optical storage device could result in exposure to
hazardous laser radiation. There are no serviceable parts
inside those drives. Do not open.
Some CD-ROM drives, DVD-ROM drives or the other
optical storage devices contain an embedded Class 3A or
Class 3B laser diode. Note the following:
Laser compliance statement
20 ThinkPad A20m/p, A21m/p, A22m/p