Acer AT350 F2 Series Service Manual page 69

Dual processors configuration
Notes: 1. Place DIMMs in "X" location.
2. DIMM population must correspond to the above tables.
3. DIMM modules support 1 GB, 2 GB and 4 GB DIMMs.
4. DIMM modules support 8 GB and 16 GB DIMMs (support
depends on availability).
5. Do not mix UDIMMs with RDIMMs.
6. 3-DIMM per channel configuration is only available for
single/dual rank RDIMM.
7. For UDIMM and quad rank RDIMM, only a maximum of two
DIMMs per channel can be supported.
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