Lenovo ThinkPad P16 Gen 2 User Manual page 46

Important notice about memory module installation
Your computer comes with four memory module slots, and supports up to 128 GB memory module in total.
a b
Slot and slot are under the service door, and slot
or replacing a memory module, use the following guidelines for better performance:
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
Do not install it/them in slot
• 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 service door.
• 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 service door
For access, do the following:
1. Disable the built-in battery. See "Disable the built-in battery" on page 31.
2. Turn off the computer and disconnect the computer from ac power and all connected cables.
3. Close the computer display and turn the computer over.
4. Remove the service door. See "Service door" on page 32.
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ThinkPad P16 Gen 2 Linux User Guide
c
a b
or/and slot under the service door.
d
and slot are under the keyboard. When installing
c or/and slot d under the keyboard.