ASROCK Fatal1ty X399 - 2.4 Expansion Slots (PCI Express Slots)

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2.4 Expansion Slots (PCI Express Slots)
ere are 5 PCI Express slots on the motherboard.
PCIe slots:
PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards.
PCIE3 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE5 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards.
PCIe Slot Congurations
Before installing an expansion card, please make sure that the power supply is switched o
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, CHA_FAN2 or CHA_FAN3) when using multiple
graphics cards.
PCIE1 PCIE2 PCIE4 PCIE5
Single Graphics Card x16 N/A N/A N/A
Two Graphics Cards in
CrossFireX
TM
or SLI
TM
Mode
x16 N/A x16 N/A
ree Graphics Cards in
3-Way CrossFireX
TM
Mode
or 3-Way SLI
TM
Mode
x16 x8 x16 N/A
Four Graphics Cards in
4-Way CrossFireX
TM
Mode
or 4-Way SLI
TM
Mode
x16 x8 x16 x8