Lenovo ThinkCentre M90z (English) User Guide - Page 29

Press the memory module, of the new memory module into the slot

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To install or replace a memory module, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer cover. See "Removing the computer cover" on page 14. 4. Locate the memory slots. See "Component locations" on page 10. 5. Open the retaining clips. If you are replacing an old memory module, open the retaining clips and remove the old memory module, as shown: Figure 12. Removing the memory module 6. Insert the notched end 2 of the new memory module into the slot 1 . Press the memory module firmly and pivot the memory module until it snaps into place. Make sure that the memory module is secured in the slot and does not move easily. Figure 13. Installing a memory module What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to "Completing the parts replacement" on page 50. Chapter 2. Installing or replacing hardware 21

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To install or replace a memory module, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See “Removing the computer cover” on page 14.
4. Locate the memory slots. See “Component locations” on page 10.
5. Open the retaining clips. If you are replacing an old memory module, open the retaining clips and
remove the old memory module, as shown:
Figure 12. Removing the memory module
6. Insert the notched end
2
of the new memory module into the slot
1
. Press the memory module
firmly and pivot the memory module until it snaps into place. Make sure that the memory module is
secured in the slot and does not move easily.
Figure 13. Installing a memory module
What to do next:
•
To work with another piece of hardware, go to the appropriate section.
•
To complete the installation or replacement, go to “Completing the parts replacement” on page 50.
Chapter 2
.
Installing or replacing hardware
21