Lenovo ThinkServer TS430 - Manual (Page 107)

The following illustration helps you to locate the memory slots on the system board.
Figure 42. Memory slots on the system board
1 Memory slot 4 (DIMMB2) 3 Memory slot 2 (DIMMA2)
2 Memory slot 3 (DIMMB1) 4 Memory slot 1 (DIMMA1)
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 slot(s) into
which the memory module(s) should be installed in different situations. The numbers 1, 2, 3, and 4 indicate
the installation sequence.
Note: The installed memory modules must be the same type with the same voltage and frequency.
UDIMM DIMMA1 DIMMA2 DIMMB1 DIMMB2
One UDIMM X
Two UDIMMs X, 1 X, 2
Three UDIMMs X, 3 X, 1 X, 2
Four UDIMMs X, 3 X, 1 X, 4 X, 2
Installing a memory module
Attention: Do not open your server or attempt any repair before reading and understanding the “Safety information”
on page iii and “Guidelines” on page 85.
This topic provides instructions on how to install a memory module.
Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
Chapter 6 . Installing, removing, or replacing hardware 95