124 Installing System Components
Installing Memory Modules
  WARNING: The memory modules are hot to touch for some time after the system 
has been powered down. Allow time for the memory modules to cool before 
handling them. Handle the memory modules by the card edges and avoid touching 
the components on the memory module.
  CAUTION: Many repairs may only be done by a certified service technician. 
You should only perform troubleshooting and simple repairs as authorized in 
your product documentation, or as directed by the online or telephone service 
and support team. Damage due to servicing that is not authorized by Dell is 
not covered by your warranty. Read and follow the safety instructions that 
came with the product 
 
CAUTION: To ensure proper system cooling, memory-module blanks must be 
installed in any memory socket that is not occupied. Remove memory-module 
blanks only if you intend to install memory in those sockets.
1
Turn off the system, including any attached peripherals, and disconnect 
the system from the electrical outlet.
2
Open the system. See "Opening the System" on page 82.
3
Remove the system board shroud. See "Removing the System Board 
Shroud" on page 109.
4
Locate the memory module sockets. See Figure 6-1.
Table 3-4. Sample UDIMM Memory Configurations (Per Processor)
Memory 
Module 
Size
Memory Sockets  Single Processor Dual Processor
1 3 2 4 Physical 
Memory (GB)
Available 
Memory (GB)
Physical 
Memory (GB)
Available 
Memory (GB)
1 GB X
X
XX
X
XX
1
2
4 
all 2
4 
8
all
2 GB X
X
XX
X
XX
2
4
8
all 4
8 
16 
all
4 GB X
X
XX
X
XX
4
8
16
all 8
16 
32 
all
R415HOM.book  Page 124  Friday, September 24, 2010  9:37 AM