Memory module (for selected models)

Prerequisite

Before you start, read Important safety information and print the following instructions.

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

To replace a memory module, 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. Then, close the computer display.
Remove the base cover assembly. See Base cover assembly (for T490 and P43s only) or Base cover assembly (for T590 and P53s only).
Open the latches on both sides of the memory slot at the same time 1, and then remove the memory module 2.
Note: A Mylar film might cover the memory module. To access the memory module, open the film first.
Install the memory module by doing the following:
1. Place the notched end of the new memory module toward the contact edge side of the memory slot. Then, insert the new memory module into the memory slot at an angle of about 20 degrees 1.
2. Pivot the memory module downward until it snaps into place 2. Ensure that the memory module is firmly installed in the memory slot and cannot be moved easily.
Reinstall the base cover assembly.
Connect the ac power adapter and all disconnected cables to the computer.