Apple MacBook 13inch Aluminum Late2008 Manual

							 
Chapter 3   Boost Your MacBook41
7Insert the replacement drive at an angle, making sure the mounting screws are seated 
properly.
8Replace the bracket and tighten the screw.
9Follow the instructions for replacing the battery on page 36.
For information about installing Mac OS X and bundled applications, see “Reinstalling 
the Software That Came with Your MacBook” on page 61. 
						

							 
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:
ÂDouble Data Rate Small Outline Dual Inline Memory Module (DDR3) format
Â1.25 inch (3.18 cm)
Â1 GB or 2 GB
Â200-pin
ÂPC3-8500 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: 
1Follow the instructions for removing the battery on page 34.
2Remove the eight (8) screws that secure the bottom case of your MacBook, and then 
remove the bottom case. 
						

							 
Chapter 3   Boost Your MacBook43
Important:  Because the screws are different lengths, note the screw lengths and 
locations so you can replace the screws correctly. Put them aside in a safe place.
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Important:  When you remove the bottom case, you expose sensitive internal 
components. Avoid touching anything other than the memory assembly when you 
remove and replace memory.
3Touch a metal surface inside the computer to discharge any static electricity from 
your body. 
						

							 
Chapter 3   Boost Your MacBook45
4Push the ejection levers on the sides of the memory module in an outward direction to 
release the module from the memory card slot. 
The memory pops up at an angle. Before removing it, make sure you see the half-circle 
notches. If you don’t, try pressing the ejection levers outward again. 
5Hold the memory module by its notches and remove it from the slot. 
6Remove the other memory module.
Important:  Hold the memory modules by their edges, and do not touch the gold 
connectors. 
						

							 
46 Chapter 3   Boost Your MacBook
7Insert the new memory module in the slot:
aAlign the notch on the gold edge of the module with the notch in the lower memory 
slot.
bTilt the card and push the memory into the slot.
cUse two fingers with firm, even pressure to push down on the memory module. 
You should hear a click when the memory is inserted correctly.
dRepeat to install an additional memory module in the top slot. Press down on the 
module to make sure it is level. 
						

							 
Chapter 3   Boost Your MacBook47
Notches 
						

							 
48 Chapter 3   Boost Your MacBook
8Replace the bottom case. Replace and tighten the eight screws, making sure to put the 
different length screws in their proper locations.
9Follow the instructions for replacing the battery on page 36.
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Chapter 3   Boost Your MacBook49
Making Sure Your MacBook Recognizes the New Memory
After installing additional memory in your MacBook, check whether the computer 
recognizes the new memory. 
To check the computer’s memory:
1Start up your MacBook.
2When you see the Mac OS X desktop, choose Apple () > About This Mac.
For a detailed breakdown of the memory installed in your computer, open System 
Profiler by clicking More Info and then Memory. 
If your MacBook doesn’t recognize the memory or doesn’t start up correctly, confirm 
that the memory you installed is compatible with your MacBook and that it is installed 
correctly.