Apple PowerBook (5300 Series) - Manual (Page 152)

The instructions in this section tell you how to install a RAM expansion card
in your Macintosh PowerBook.
Note: You should attempt to install a RAM card only if you are comfortable
working with electronic equipment. You should read all of the following
instructions before you begin. If the procedure sounds like something you
don’t want to do yourself, any Apple-authorized service provider can install
the card for you (for a service charge).
WARNING If you attempt to install additional RAM yourself, any damage
you may cause to your equipment will not be covered by the limited
warranty on your computer. See an Apple-authorized dealer or service
provider for additional information about this or any other warranty
question.
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Appendix C Installing a Macintosh PowerBook
RAM Expansion Card
Refer to this appendix for
instructions on installing a
Macintosh PowerBook RAM
expansion card.