MacBook: How to install memory

MacBook (13-inch, Aluminum, Late 2008) computer has two memory slots that you access by removing the access door, battery, and bottom case. Your MacBook comes with at least 2 GB (1 GB in each slot) of 1066 MHz Double Date Rate (DDR3) Synchronous Dynamic Random-Access Memory (SDRAM) installed.

Both memory slots can accept an SDRAM module that meets the following specifications:

Double Data Rate Small Outline Dual Inline Memory Module (DDR SO-DIMM) format
1.25 inch or smaller (3.18 cm)
1 Gigabyte (GB) or 2 Gigabyte (GB)
200-pin
PC3-8500 DDR3 1066 MHz Type RAM
Depending on the configuration of the MacBook (13-inch, Aluminum, Late 2008) you purchased, both memory slots may already be full. The maximum amount of memory you can install in your MacBook (13-inch, Aluminum, Late 2008) is 4 GB (using 2 GB DIMMs in both memory slots).

Note: For best performance, fill both memory slots, installing an equal memory module in each slot.


Step 1: Before you begin
Shut down your MacBook. Disconnect the power adapter, Ethernet cable, and any other cords connected to the MacBook, in order to prevent damaging the computer.
Turn the computer over.
Review and follow MacBook: How to remove or install the battery to remove the battery.
Step 2: Remove the bottom case

Remove the eight (8) screws that secure the bottom case of your MacBook, and then remove the bottom case.
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.



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.
Touch a metal surface inside the computer to discharge any static electricity from your body.


Step 3: Removing the original memory

Push 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.

Hold the memory module by its notches, do not touch the gold connectors, and remove it from the slot.
Step 4: Installing the new memory

Align the notch on the gold edge of the module with the notch in the lower memory slot.
Tilt the card and push the memory into the slot.
Use two fingers with firm, even pressure to push down on the memory module. You should hear a click when the memory is inserted correctly.
Repeat to install an additional memory module in the top slot. Press down on the module to make sure it is level.


Step 5: Replace the bottom case

Replace the bottom case. Replace and tighten the eight screws, making sure to put the different length screws in their proper locations.

http://support.apple.com/kb/HT1651