Memory
Description Spare part number
Memory—SODIMM 4GB PC3L 12800 (maximum 8 GB) 691799-855
IMPORTANT: Make special note of each screw and screw lock size and location during removal
and replacement.
Before removing the memory, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the base enclosure (see Base enclosure on page 20), and then remove the following
components:
a. Battery (see Battery on page 22).
b. Optical drive dummy (see Optical drive dummy on page 22).
c. Hard drive (see Hard drive on page 23).
If you are replacing a memory module, remove the existing memory module:
1. Lift the clear lm covering the memory module.
2. Pull away the retention clips (1) on each side of the memory module.
The memory module tilts up.
Component replacement procedures 25
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