Lenovo ThinkStation E20 4215 User Manual page 28

v Use 1 GB, 2 GB, or 4 GB memory modules in any combination up to a
v Install memory modules in the sequence of DIMM 1, DIMM 3, DIMM 2, and
To install or replace a memory module, do the following:
1. Remove the computer cover. See "Removing the computer cover" on page 14.
2. Locate the memory slots. See "Locating parts on the system board" on page 11.
3. Remove any parts that might prevent your access to the memory slots.
4. Open the retaining clips.
Figure 11. Opening the retaining clips
Figure 12. Removing a memory module
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User Guide
maximum of 16 GB.
DIMM 4. See "Locating parts on the system board" on page 11.
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 16.
If you are replacing an old memory module, open the retaining clips and
gently pull the memory module out of the memory slot.