Memory module

Prerequisite

Before you start, read Generic Safety and Compliance Notices and print the following instructions.

Attention: Do not touch the contact edge of the memory module. Otherwise, the memory module might get damaged.

Important notice about memory module installation

Your computer comes with four memory module slots, and supports up to 128 GB memory module in total. Slot a and slot b are under the bottom cover, and slot c and slot d are under the keyboard. When installing or replacing a memory module, use the following guidelines for better performance:

Illustration showing the memory module slots.

Important: It is recommended that you follow below installation rules. Otherwise, the computer might either not start or not perform well.

To install one or two memory modules in total, install it/them in slot c or/and slot d under the keyboard. Do not install it/them in slot a or/and slot b under the bottom cover.
To install three or four memory modules in total, install two memory modules in the slots under the keyboard first. Then install the third and fourth memory modules in the slots under the bottom cover.
Your computer supports up to 128 GB memory module in total, and it is recommended that you use memory modules with the same capacity, type and brand for best dual-channel memory performance.
Replace only with a memory module of the type recommended by Lenovo.

Memory module under the bottom cover

For access, do the following:

Disable the built-in battery. See Disable Fast Startup and the built-in battery.
Turn off the computer and disconnect the computer from ac power and all connected cables.
Close the computer display and turn the computer over.
Remove the bottom cover. See Bottom cover.

Removal procedure

Illustration of how to remove the memory module.

Memory module under the keyboard

For access, do the following:

Disable the built-in battery. See Disable Fast Startup and the built-in battery.
Turn off the computer and disconnect the computer from ac power and all connected cables.
Close the computer display and turn the computer over.
Remove the bottom cover. See Bottom cover.
Remove the keyboard. See Keyboard.
Remove the service bracket. See Service bracket.