Apple Macintosh PowerBook 190 Series - Manual (Page 152)

The instructions in this section tell you how to install a RAM expansion card
in your Macintosh PowerBook.
Note: Installing a RAM card is a technically challenging procedure. You
should attempt it 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 RAM Expansion Card
Refer to this appendix for
instructions on installing a
RAM expansion card.