Primary memory module
NOTE: The computer has four memory slots. Expansion memory slots are located in a compartment on the
bottom of the computer. Primary memory slots are located under the keyboard.
When you add or replace the primary memory modules, populate the bottom slot before the top slot.
Description Spare part number
8.0-MB memory module (PC3L-12800, 1600 MHz, DDR3L) 693374-001
4.0-MB memory module (PC3L-12800, 1600 MHz, DDR3L) 691740-001
Before removing a primary 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 45).
5. Remove the service cover (see Service cover on page 47)
6. Remove the optical drive (see Optical drive on page 56) or Upgrade Bay hard drive (see Upgrade Bay
hard drive on page 58).
7. Remove the keyboard (see Keyboard on page 61).
Remove the primary memory module:
1. Spread the retetntion tabs (1) on each side of the primary memory module slot to release the primary
memory module. (The edge of the module opposite the slot rises away from the computer.)
2. Remove the primary 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 installation into the primary
memory module slots.
64 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
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General
Weight and Dimensions
