MSI B450M-A PRO MAX AM4 Micro-ATX Motherboard - Manual (Page 10)

10
Overview of Components
DIMM Slots
Please install the memory module into the DIMM slot as shown below.
⚠
Important
∙ Always insert memory modules in the DIMMB1 slot first.
∙ Due to chipset resource usage, the available capacity of memory will be a little less
than the amount of installed.
∙ Based on processor specification, the Memory DIMM voltage below 1.35V is sug -
gested 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 www.msi.com for more information on compatible memory.
PCI_E1~2: PCIe Expansion Slots
⚠
Important
∙ When adding or removing expansion cards, always turn off the power supply and
unplug the power supply power cable from the power outlet. Read the expansion
card’s documentation to check for any necessary additional hardware or software
changes.
∙ If you install a large and heavy graphics card, you need to use a tool such as MSI
Gaming Series Graphics Card Bolster to support its weight to prevent deformation
of the slot.
Processors
Slots
1st, 2nd
and 3rd
Gen AMD
Ryzen TM
Ryzen™ with Radeon™ Vega
Graphics,
2nd Gen AMD Ryzen™ with
Radeon™ Graphics,
A-series,
Athlon TM X4
Athlon™ with
Radeon™
Vega Graphics
PCI_E1 PCIe 3.0 x16 PCIe 3.0 x8 PCIe 3.0 x4
PCI_E2 PCIe 2.0 x1 PCIe 2.0 x1 PCIe 2.0 x1
1
1
2
3
3
2