Before you start, read Generic Safety and Compliance Notices and print the following instructions.
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.
Remove the nano-SIM-card tray if your computer comes with one. See Connect to a cellular network (for selected models).
Turn the computer over.
Remove the base cover assembly. See Base cover assembly.
You can install the memory in any slot.
Memory module replacement might cause memory retraining. For details, see Detect memory retraining (for Intel models only).