Apple PowerBook (5300 Series) - Manual (Page 154)

143 Installing a Macintosh PowerBook RAM Expansion Card
Installing the card
To install the RAM expansion card, follow these steps:
1 Disconnect all cables from the computer, including the power adapter. Make sure the
computer is turned off.
2 Close and latch the display.
3 Remove the battery from the computer.
If you’re unfamiliar with this procedure, follow the instructions in “Removing
or Replacing the Battery” in Chapter 6.