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Memory modules
Description Spare part number
2-GB memory module (PC3L-12800, 1600-MHz, DDR3) 691739-001
4-GB memory module (PC3L-12800, 1600-MHz, DDR3) 691740-001
8-GB memory module (PC3L-12800, 1600-MHz, DDR3) 693374-001
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 35).
5. Remove the service door (see
Service door on page 43).
Remove the memory module:
1. Position the computer upside-down with the battery bay 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.)
3. Remove the memory module (2) by pulling the module away from the slot at an angle.
NOTE: Memory modules are designed with a notch to prevent incorrect insertion into the
memory module slot.
NOTE: The computer uses two memory sockets. The removal procedure is the same for both
memory sockets.
Reverse this procedure to install a memory module.
Component replacement procedures
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