Acer AB460 F1 User Manual page 231

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Figure 3-136. AB2x280 F1 DIMM Numbering
For an interleaved configuration, memory modules of the same size
and speed must be installed. You should not mix DIMMs of different
sizes and speeds.
Note: The DIMM slot number specified in the following
tables equals the DIMM slot to be populated. A "---"
indicates that the DIMM slot should be left unpopulated.
Note: Though multiple DIMM memory module types and
speeds may be supported, you need to use DIMM memory
modules of the same speed and type.
CPU2
For CPU2
CPU1
For CPU1