MSI MPG B650 CARBON WIFI Manuel D'utilisation page 31

PCI_E1~3: PCIe Expansion Slots
BAT1
⚠
Important
∙ 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.
∙ 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.
PCI_E1, M2_2 & M2_3 share the bandwidth. PCI_E1 will run at x8 speed when
∙
installing devices in M2_2 or M2_3 slots.
M.2 slots and PCIe slots combination table
Slot
M2_1 (CPU)
M2_2 (CPU)
M2_3 (CPU)
M2_4 (Chipset)
PCI_E1 (CPU)
PCI_E2 (CPU)
PCI_E3 (Chipset)
(PCIe: M.2 PCIe SSD, X: no device, ✓: available)
PCI_E1: PCIe 4.0 x16 (From CPU)
PCI_E2: PCIe 4.0 x4 (From CPU)
PCI_E3: PCIe 3.0 x1 (From B650 Chipset)
X PCIe x4
X X
PCIe x16 PCIe x8
29
Combination
✓
X
PCIe x4
✓
PCIe x8
✓
✓
PCIe x4
PCIe x4
PCIe x8