82 Installing System Components
Installing Memory Modules
  CAUTION: Only trained service technicians are authorized to remove the system 
cover and access any of the components inside the system. Before performing any 
procedure, see your Product Information Guide for complete information about 
safety precautions, working inside the computer and protecting against 
electrostatic discharge.
1
Open the system. See "Opening the System" on page 54.
2
Locate the memory module sockets. See Figure 6-2.
3
Press the ejectors on the memory module socket down and out, as shown 
in Figure 3-17, to allow the memory module to be inserted into the socket.
4
Align the memory module's edge connector with the alignment keys of the 
memory module socket, and insert the memory module in the socket.
  NOTE: The memory module socket has two alignment keys that allow you to 
install the memory module in the socket in only one way.
Table 3-1. Sample Memory Module Configurations
Total Memory DIMM1_A DIMM2_A DIMM1_B DIMM2_B
512 MB 512 MB None None None
1 GB 512 MB None 512 MB None
1 GB 1 GB None None None
2 GB 512 MB 512 MB 512 MB 512 MB
2 GB 1 GB None 1 GB None
3 GB 1 GB 512 MB 1 GB 512 MB
4 GB 1 GB 1 GB 1 GB 1 GB
4 GB 2 GB None 2 GB None
5 GB 2 GB 512 MB 2 GB 512 MB
6 GB 2 GB 1 GB 2 GB 1 GB
8 GB 2 GB 2 GB 2 GB 2 GB
book.book  Page 82  Thursday, August 30, 2007  3:30 PM