Lenovo ThinkPad S540 User Manual page 91

Increasing memory capacity is an effective way to make programs run faster. You can increase memory
capacity by replacing or adding a memory module.
Notes:
• Depending on the model, your computer might have one or two memory-upgrade slots.
• The operating speed of the memory module has dependency on the system configuration. In some
conditions, the memory module in your computer might not be able to operate at the maximum speed.
Attention: Before handling a memory module, touch a metal table or a grounded metal object. This action
reduces any static electricity from your body. Static electricity could damage the memory module.
To replace a memory module, do the following:
1. Disable the built-in battery. See "Disabling the built-in battery" on page 69.
2. Close the computer display, and turn over the computer.
3. Remove the base cover assembly. See "Replacing the base cover assembly" on page 71.
4. Open the latches on both sides of the memory-upgrade slot at the same time
memory module 2
Note: The memory-upgrade slot
5. Place the notched end of the new memory module toward the contact edge side of the memory-upgrade
slot and insert the memory module into the slot
module downward until it snaps into place
the slot and cannot be moved easily.
Attention:
• Do not touch the contact edge of the memory module. Otherwise the memory module might be
damaged.
• For models that come with two memory-upgrade slots, if only one memory module is installed, ensure
that you install the memory module into the slot as shown in the following illustration. Otherwise
your computer cannot work normally.
. Save the removed memory module for future use.
a
is available on some models.
1 at an angle of about 20 degrees. Pivot the memory
2 . Ensure that the memory module is firmly installed in
1 , and then remove the
.
Chapter 6 Replacing devices
75