Apple MacBook (13-inch, Aluminum, Late 2008) - Manual (Page 42)

42 Chapter 3 Boost Your MacBook
Installing Additional Memory
Your computer has two memory slots that you access by removing the battery and
bottom case. Your MacBook comes with a minimum of 2 gigabytes (GB) of 1066 MHz
Double Data Rate (DDR3) Synchronous Dynamic Random-Access Memory (SDRAM)
installed. Each memory slot can accept an SDRAM module that meets the following
specifications:
 Double Data Rate Small Outline Dual Inline Memory Module (DDR3) format
 1.25 inch (3.18 cm)
 1 GB or 2 GB
 200-pin
 PC3-8500 DDR3 1066 MHz Type RAM
You can add two 2 GB memory modules for a maximum of 4 GB of memory. For best
performance, fill both memory slots and install an identical memory module in each
slot.
To install memory in your MacBook:
1 Follow the instructions for removing the battery on page 34.
2 Remove the eight (8) screws that secure the bottom case of your MacBook, and then
remove the bottom case.