This document contains instructions for removing and installing the memory on your A20 or A21 ThinkPad computer.

Removing the memory

1. Remove the battery pack.
2. Loosen the screw as indicated by 1.
3. Remove the cover as indicated by 2.
   
4. Press out on the latches on both edges of the socket the same time as indicated by 3.
5. Remove the DIMM as indicated by 4.
6. Replace the memory slot cover; then tighten the screw.
   

Installing the memory

Reverse Steps 6 through 2.