MSI Z790-S01 Manuel D'utilisation page 28

PCI_E1~5: PCIe Expansion Slots
⚠
Important
∙ If you install a large and heavy graphics card, you need to use a tool such as MSI
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.
M2_WIFI1: M.2 Slot (Key E)
Please install PCIe Wi-Fi module into M_WIFI1 slot as shown below.
1 1
PCI_E1: PCIe 5.0 x16 (From CPU)
BAT1
PCI_E2: PCIe 3.0 x1 (From Z790 chipset)
PCI_E3: PCIe 3.0 x4 (From Z790 chipset)
PCI_E4: PCIe 3.0 x1 (From Z790 chipset)
PCI_E5: PCIe 3.0 x1 (From Z790 chipset)
26
2 2
3 3
30º
30º