Installing Or Replacing A Memory Module - Lenovo ThinkCentre Hardware Maintenance Manual

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 83.
4. Locate the rear I/O assembly. See "Locating major FRUs and CRUs (for models with the 20-inch display)"
on page 73 or "Locating major FRUs and CRUs (for models with the 23-inch display)" on page 76.
5. Remove the screws
upward to remove it from the rear I/O assembly slot.
Figure 12. Removing the rear I/O assembly
6. To reinstall the rear I/O assembly, align the screw holes in the rear I/O assembly with those in the
chassis. Then, press the top of the rear I/O assembly downward until it snaps into place.
7. Install the screws to secure the rear I/O assembly to the chassis.
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 126.

Installing or replacing a memory module

Attention:
Do not open your computer or attempt any repair before reading and understanding "Important Safety Information"
on page 1.
This section provides instructions on how to install or replace a memory module.
Your computer has two slots for installing or replacing DDR3 SODIMMs that provide up to a maximum of
16 GB system memory. When installing or replacing a memory module, use 2 GB, 4 GB or 8 GB DDR3
SODIMMs in any combination up to a maximum of 16 GB.
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ThinkCentre Hardware Maintenance Manual
1 that secure the rear I/O assembly to the chassis. Then, lift the rear I/O assembly