Memory module
Description Spare part number
4-GB (PC3, 12800, 1600-MHz) 641369-001
2-GB (PC3, 12800, 1600-MHz) 652972-001
Before removing a 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 56).
5. Remove the memory module/wireless module compartment cover (see
WLAN module
on page 64).
Component replacement procedures
67
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