Lenovo ThinkStation D20 Hardware Maintenance Manual page 125

5. Open the retaining clips as shown.
If you are replacing an old memory module, open the retaining clips and remove the memory module
being replaced as shown.
6. Position the new memory module over the memory slot. Make sure the notch
aligns correctly with the slot key
the slot until the retaining clips close.
2 on the system board. Push the memory module straight down into
Chapter 11
1 on the memory module
.
Replacing FRUs (Type 4155, 4158, 4218)
117