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Memory modules
Description Spare part number
2-GB memory module (PC3L, 12800, 1600-MHz) 691739-001
4-GB memory module (PC3L, 12800, 1600-MHz) 691740-001
8-GB memory module (PC3L, 12800, 1600-MHz) 693374-001
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 46).
5. Remove the service cover (see
Service cover on page 47).
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.)
CAUTION: To prevent damage to the memory module, hold it by the edges only. Do not touch
the components on the memory module.
2. Slide the memory module forward (2) to remove it.
Component replacement procedures
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