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Memory module
NOTE: The computer can be equipped with up to two memory modules. The primary memory module
is installed in the memory module socket closest to the system board. The expansion memory module is
installed in the memory module socket farthest from the system board.
Description Spare part number
8 GB (DDR3, 10600, 1333-MHz, for use only with computer models equipped with an
Intel processor)
634091-001
4 GB (DDR3, 10600, 1333-MHz) 621569-001
2 GB (DDR3, 10600, 1333-MHz) 621565-001
1 GB (DDR3, 10600, 1333-MHz) 639736-001
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 52).
5. Remove the service cover (see
Optical drive on page 53).
Remove the memory module:
1. Spread the retaining tabs (1) on each side of the memory module slot to release
the memory module. (The memory module tilts up.)
Component replacement procedures
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