MSI B450M-A PRO MAX II Manuel D'utilisation page 27

DIMM Slots
Memory module installation recommendation
DIMMB1
⚠
Important
Always insert memory modules in the DIMMB1 slot first.
∙
To ensure system stability for Dual channel mode, memory modules must be of the
∙
same type, number and density.
Based on processor specification, the Memory DIMM voltage below 1.35V is
∙
suggested to protect the processor.
∙ Due to AM4 CPU/ memory controller official specification limitation, the frequency
of memory modules may operate lower than the marked value under the default
state.
Please refer to www.msi.com for more information on compatible memory.
∙
DIMMA1
Channel A
25
DIMMB1
Channel B
DIMMA1
DIMMB1