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PCI_E1~5: PCIe Expansion Slots

PCI_E1: PCIe 4.0 x16 (From CPU)

PCI_E3: PCIe 4.0 x4 (From Z790 chipset)

PCI_E5: PCIe 4.0 x4 (From Z790 chipset)

PCI_E2: PCIe 3.0 x1 (From Z790 chipset)

PCI_E4: PCIe 3.0 x1 (From Z790 chipset)

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Important

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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.

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For a single PCIe x16 expansion card installation with optimum performance, using

the PCI_E1 slot is recommended.

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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.

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MSI Z790 GAMING PRO WIFI Specifications

General

Chipset	Intel Z790
CPU Socket	LGA 1700
Memory Slots	4
Max Memory	128GB
Storage Interface	4x M.2, 6x SATA 6Gb/s
Form Factor	ATX
Network	Wi-Fi 6E, 2.5G LAN
Audio	Realtek ALC4080
RGB Support	Mystic Light
Memory Support	DDR5
USB Ports	1 x USB 3.2 Gen 2x2 Type-C port (rear) 6 x USB 3.2 Gen 2 Type-A ports (rear) 2 x USB 3.2 Gen 1 ports (rear) 1 x USB 3.2 Gen 2 Type-C port (front) 2 x USB 3.2 Gen 1 ports (front) 4 x USB 2.0 ports (front)