84
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Installing System Components
DIMM
Processor 1
DIMM
D0
DIMM
D1
DIMM
D2
DIMM
C0
DIMM
C1
DIMM
C2
SR/DR
1
−
−
−
−
−
−
2
−
−
−
−
−
−
2
−
−
−
−
−
√
4
−
−
−
−
−
−
4
−
−
√
−
−
√
6
−
−
−
−
−
−
8
√
−
√
√
−
√
12
√
√
√
√
√
√
QR
4
−
√
−
−
√
−
NOTE: An empty DIMM socket is marked as “
−
”. For best performance, all the
memory modules installed must be of the same speed, capacity, and from the
same manufacturer. SR is Single Rank, DR is Dual Rank and QR is Quad Rank.
Removing the Memory Modules
WARNING: The memory modules are hot to the 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.
1
Turn off the system, including any attached peripherals, and
disconnect the system from the electrical outlet.
2
Remove the system-board assembly. See "Removing a System-Board
Assembly" on page 68.
3
Locate the memory module sockets. See Figure 3-13.
