Lenovo ThinkPad T420si (English) User Guide - Page 119
Loosen the screws on the memory slot cover 1, then remove the cover 2., Remove the two screws.
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4. Loosen the screws on the memory slot cover (1), then remove the cover (2). 5. Remove the two screws. 6. Turn the computer over and open the display. Chapter 6. Replacing devices 103
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4. Loosen the screws on the memory slot cover (1), then remove the cover (2).
5. Remove the two screws.
6. Turn the computer over and open the display.
Chapter 6
.
Replacing devices
103