The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending
on how the memory modules are installed.
The system will operate in single channel mode if the memory module slots are populated in one
The system will operate in a higher-performing dual channel mode if the memory capacity of the
memory module in Channel A is equal to the memory capacity of the memory module in Channel B.
The system will operate in flex mode if the memory capacity of the memory module in Channel A is not
equal to the memory capacity of the memory module 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 memory module in the
Installing memory modules
There are two memory sockets on the system board. To remove or install memory modules:
Prepare the computer for disassembly (see
Remove the base unit rear and front access panels. See
To locate the memory modules on the system board, see
To remove a memory module, press outward on the two latches on each side of the memory module (1),
and then pull the memory module out of the socket (2).
Preparing to disassemble the computer on page
Base unit access covers on page
Internal components on page