ASROCK Z790 Pro RS/D4, Руководство пользователя

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Expansion Slots (PCIe Slots)
There are 4 PCI Express slots on the motherboard.
PCIe slots:
PCIE1 (PCIe 3.0 x1 slot) is used for PCIe x1 lane width cards.
PCIE2 (PCIe 5.0 x16 slot) is used for PCIe x16 lane width graphics cards.
PCIE3 (PCIe 4.0 x16 slot) is used for PCIe x4 lane width graphics cards.
PCIE4 (PCIe 3.0 x1 slot) is used for PCIe x1 lane width cards.
PCIe Slot Configurations
Before installing an expansion card, please make sure that the power supply is
switched off or the power cord is unplugged. Please read the documentation of the
expansion card and make necessary hardware settings for the card before you start
the installation.
For a better thermal environment, please connect a chassis fan to the motherboard’s
chassis fan connector (CHA_FAN1~5/WP) when using multiple graphics cards.
PCIE2 PCIE3
Single Graphics Card Gen5x16 N/A
Two Graphics Cards in
CrossFire TM Mode
Gen5x16 Gen4x4