Apple Macintosh PowerBook 1400 - Manual (Page 159)

You can purchase cards to augment your PowerBook’s operation. Two kinds of
cards are available for the computer. You can install two different types of
cards in the computer:
m a RAM card
m an expansion slot card with back-panel connector
You can install two RAM cards (one above the other, piggyback style) and
one expansion slot card.
Note: You should attempt to install a RAM card or an expansion slot 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 a RAM card or an expansion slot card
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.
159
Appendix C
Installing Expansion Cards
Refer to this appendix for
instructions on installing an
expansion card in your
Macintosh PowerBook.