Lenovo 4221 Laptop User Manual


 
3. Locate the memory slots. See “Locating parts on the system board” on page 71.
4. Remove any parts that might prevent your access to the memory slots. Depending on your computer
model, you might need to remove the PCI Express x16 graphics card for easier access to the memory
slots. See “Installing or replacing a PCI card” on page 75.
5. Open the retaining clips.
Figure 11. Opening the retaining clips
If you are replacing an old memory module, open the retaining clips and gently pull the memory module
out of the memory slot.
Figure 12. Removing a memory module
6. Position the new memory module over the memory slot. Make sure that the notch 1 on the memory
module aligns correctly with the slot key 2 on the system board. Push the memory module straight
down into the slot until the retaining clips close.
Chapter 9. Replacing FRUs 79