Lenovo ThinkStation D20 - Manual (Page 32)

5. Depending on whether you are installing or replacing a memory module, do one of the following:
• If you are replacing an old memory module, open the retaining clips and gently pull the memory
module out of the memory slot.
Figure 25. Removing a memory module
• If you are installing a memory module, open the retaining clips of the memory slot into which you
want to install the memory module.
Figure 26. Opening the retaining clips
26 ThinkStation Hardware Installation and Replacement Guide