Installing Or Replacing A Memory Module - Lenovo ThinkCentre 3512 Manual

7. Disconnect the three cables from the converter board.
8. Lift the converter board off the computer.
9. To reinstall the new converter board, connect the three cables to the new converter board. Position
the new converter board and align the two screw holes in the new converter board with those in the
computer.
10. Install the two screws to secure the new converter board to the main bracket.
11. Reinstall the optical drive. See "Replacing the optical drive" on page 84.
12. Go to "Completing the parts replacement" on page 111.

Installing or replacing a memory module

Attention:
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
in the Safety , Warranty, and Setup Guide that came with your computer. To obtain a copy of the Safety , Warranty,
and Setup Guide, go to:
http://www.lenovo.com/support
This section provides instructions on how to install or replace a memory module.
Your computer has two memory slots for installing or replacing DDR3 SODIMMs (small outline dual inline
memory modules). When installing or replacing a memory module, use 1 GB, 2 GB or 4 GB DDR3 SODIMMs
in any combination up to a maximum of 8 GB of system memory.
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 other flat 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.
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ThinkCentre Hardware Maintenance Manual