Populating SODIMM Sockets
There are two SODIMM sockets on the system board, with one socket per channel. The sockets are
labeled DIMM1 and DIMM3. The DIMM1 socket operates in memory channel A. The DIMM3 socket
operates in memory channel B.
Figure 2-10 SODIMM Socket Locations
Table 2-1 SODIMM Socket Locations
Item Description Socket Color
1 SODIMM1 socket, Channel A Black
2 SODIMM3 socket, Channel B White
NOTE: A SODIMM must occupy the black DIMM1 socket. Otherwise, the
system will display a POST error message indicating that a memory module
must be installed in the black socket.
The system will automatically operate in single channel mode, dual channel mode, or flex mode,
depending on how the SODIMMs are installed.
●
The system will operate in single channel mode if the SODIMM sockets are populated in one
channel only.
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The system will operate in a higher-performing dual channel mode if the memory capacity of the
SODIMM in Channel A is equal to the memory capacity of the SODIMM in Channel B.
●
The system will operate in flex mode if the memory capacity of the SODIMM in Channel A is not
equal to the memory capacity of the SODIMM in Channel B. In flex mode, the channel populated
with the least amount of memory describes the total amount of memory assigned to dual channel
and the remainder is assigned to single channel. If one channel will have more memory than the
other, the larger amount should be assigned to channel A.
●
In any mode, the maximum operational speed is determined by the slowest SODIMM in the system.
ENWW Installing Additional Memory 17
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