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5. Replace the battery.
6. Reconnect AC power and external devices to the computer.
7. Turn on the computer.
Adding or replacing memory modules
The computer has two memory module slots. The capacity of the computer can be upgraded by adding
a memory module to the vacant expansion memory module slot or by upgrading the existing memory
module in the primary memory module slot.
WARNING! To reduce the risk of electric shock and damage to the equipment, unplug the power cord
and remove all batteries before installing a memory module.
CAUTION: Electrostatic discharge (ESD) can damage electronic components. Before beginning any
procedure, ensure that you are discharged of static electricity by touching a grounded metal object.
NOTE: To use a dual-channel configuration when adding a second memory module, be sure that both
memory modules are identical.
To add or replace a memory module:
CAUTION: To prevent information loss or an unresponsive system:
Shut down the computer before adding or replacing memory modules. Do not remove a memory module
while the computer is on, in the Sleep state, or in Hibernation.
If you are not sure whether the computer is off or in Hibernation, turn the computer on by pressing the
power button. Then shut down the computer through the operating system.
1. Save your work and shut down the computer.
2. Disconnect AC power and external devices connected to the computer.
3. Remove the battery.
4. With the hard drive bay toward you, loosen the 2 memory module compartment cover screws (1).
30 Chapter 5 Maintenance