MSI X399 GAMING PRO CARBON AC Manual page 33

DIMMC2
DIMMD2
Important
Always insert a memory module in the DIMMB2 slot first.
y
To ensure system stability for Dual/ Triple/ Quad channel mode, memory modules
y
must be of the same type, number and density.
Due to chipset resource usage, the available capacity of memory will be a little less
y
than the amount of installed.
The Memory DIMM voltage below 1.35V is suggested to protect the CPU.
y
Please note that the maximum capacity of addressable memory is 4GB or less
y
for 32-bit Windows OS due to the memory address limitation. Therefore, we
recommended that you to install 64-bit Windows OS if you want to install more than
4GB memory on the motherboard.
It is recommended to use a more efficient memory cooling system for full DIMMs
y
installation or overclocking.
The stability and compatibility of installed memory modules depend on installed CPU
y
and devices when overclocking.
DIMMB2
DIMMA2
DIMMC1
DIMMC2
DIMMD1
DIMMA1
DIMMD2
Overview of Components
DIMMB2
DIMMB1
DIMMA2
33