MSI MS-7877 v1.X - PCIe Expansion Slots

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PCI_E: PCIe Expansion Slots
The PCIe slot supports the PCIe interface expansion card.
PCIe x Slot
Important
When adding or removing expansion cards, always turn o󰘯 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.