HP ProBook 4540s HP Notebook User Guide - Linux - Page 74

Memory modules, Remove the battery. See - memory upgrade

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9 Memory modules The computer has one memory module compartment. 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 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 Suspend 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. Turn the computer upside down on a flat surface. 4. Remove the battery. (See Inserting or removing the battery on page 43.) 5. Remove the service door. (See Removing or replacing the service door on page 50.) 6. If you are replacing a memory module, remove the existing memory module: a. Pull away the retention clips (1) on each side of the memory module. The memory module tilts up. CAUTION: To prevent damage to the memory module, hold the memory module by the edges only. Do not touch the components on the memory module, and do not bend the memory module. 64 Chapter 9 Memory modules

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9
Memory modules
The computer has one memory module compartment. 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 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 Suspend 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.
Turn the computer upside down on a flat surface.
4.
Remove the battery. (See
Inserting or removing the battery
on page
43
.)
5.
Remove the service door. (See
Removing or replacing the service door
on page
50
.)
6.
If you are replacing a memory module, remove the existing memory module:
a.
Pull away the retention clips
(1)
on each side of the memory module.
The memory module tilts up.
CAUTION:
To prevent damage to the memory module, hold the memory module by the
edges only. Do not touch the components on the memory module, and do not bend the
memory module.
64
Chapter 9
Memory modules