MSI PRO B660M-VC WIFI DDR4 Manuel D'utilisation page 16

⚠
Important
Always insert memory modules in the DIMMA2 slot first.
∙
To ensure system stability for Dual channel mode, memory modules must be of the
∙
same type, number and density.
∙ Some memory modules may operate at a lower frequency than the marked value
when overclocking due to the memory frequency operates dependent on its Serial
Presence Detect (SPD). Go to BIOS and find the DRAM Frequency to set the memory
frequency if you want to operate the memory at the marked or at a higher frequency.
It is recommended to use a more efficient memory cooling system for full DIMMs
∙
installation or overclocking.
∙ The stability and compatibility of installed memory module depend on installed
CPU and devices when overclocking.
Please refer www.msi.com for more information on compatible memory.
∙
PCI_E1~4: 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.
∙ For a single PCIe x16 expansion card installation with optimum performance, using
the PCI_E1 slot is recommended.
14
Overview of Components
PCI_E1: PCIe 4.0 x16 (From CPU)
PCI_E2: PCIe 3.0 x1 (From B660 chipset)
PCI_E3: PCIe 3.0 x1 (From B660 chipset)
PCI_E4: PCIe 3.0 x1 (From B660 chipset)