PCI_E1~3: PCIe Expansion Slots
Important
If you install a large and heavy graphics card, you need to use a tool such as MSI
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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
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the PCI_E1 slot is recommended.
When adding or removing expansion cards, always turn off the power supply and
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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.
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Rear I/O Panel
PCI_E1: PCIe 3.0 x16 (CPU lanes)
PCI_E2: PCIe 3.0 x1 slot (PCH lanes)
PCI_E3: PCIe 3.0 x1 slot (PCH lanes)