Replacing A Memory Module - Lenovo ThinkCentre M73p User Manual

7. Pivot the card latch to the closed position to secure the PCI/PCI-Express card.
Figure 13. Installing a PCI/PCI-Express card
8. Reinstall the screw to secure the PCI Express card latch in place.
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 76.

Replacing a memory module

Attention: Do not open your computer or attempt any repair before reading and understanding the "Read
this first: Important safety information" on page iii .
The following table provides information about the memory module installation rules that you should
consider when installing or removing a memory module. The "X" mark indicates the memory slots into which
the memory modules should be installed in different situations. The numbers 1, 2, 3, and 4 indicate the
installation sequence. To locate the memory module slots, see "Parts on the system board" on page 6 .
UDIMM
One UDIMM
Two UDIMMs
Three UDIMMs
Four UDIMMs
To replace a memory module, do the following:
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ThinkCentre M73p User Guide
DIMM 1 DIMM 2
X, 3
X, 3
DIMM 3
X
X, 1
X, 1
X, 1 X, 4
DIMM 4
X, 2
X, 2
X, 2