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Memory module
NOTE: Older models use DDR2 memory, while newer models use DDR3 memory. You cannot use
model numbers to determine the type of memory a model uses.
NOTE: When adding a second memory module, be sure it is the same type and speed as the installed
memory module. DDR2 memory modules cannot be mixed with DDR3 memory modules.
Description Spare part number
For use in models that use DDR2 memory
2-GB (PC2-6400, 800-MHz, DDR2) 535774-001
1-GB (PC2-6400, 800-MHz, DDR2) 535773-001
For use in models that use DDR3 memory
2-GB (PC3-10600, 1333-MHz, DDR3) 583074-001
1-GB (PC3-10600, 1333-MHz, DDR3) 583073-001
Before removing the memory module, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 41).
5. Remove the switch cover and keyboard (see
Switch cover and keyboard on page 42)
Remove the memory module:
1. Position the computer with the front toward you.
2. Spread the retaining tabs (1) on each side of the memory module slot to release the memory
module. (The edge of the module opposite the slot rises away from the computer.)
Component replacement procedures 45