ASROCK Z790 Steel Legend WiFi, User Manual

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Expansion Slots (PCIe Slots)
There are 3 PCI Express slots on the motherboard.
PCIe slots:
PCIE1 (PCIe 5.0 x16 slot) is used for PCIe x16 lane width graphics cards.
PCIE2 (PCIe 4.0 x16 slot) is used for PCIe x4 lane width graphics cards.
PCIE3 (PCIe 3.0 x16 slot) is used for PCIe x2 lane width cards.
* If M2_2 is occupied, PCIE1 will downgrade to x8 mode.
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.
PCIE1 PCIE2
Single Graphics Card Gen5x16 N/A
Two Graphics Cards in
CrossFire
TM
Mode
Gen5x16 Gen4x4