ASROCK X299 Extreme4 User Manual page 25

PCIe Slot Configurations (For CPU with 28 PCIe lanes)
Single Graphics Card
Two Graphics Cards in
CrossFireX TM or SLI
Mode
PCIe Slot Configurations (For CPU with 16 PCIe lanes)
Single Graphics Card
Two Graphics Cards in
TM
CrossFireX or SLI
Mode
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 mul-
tiple graphics cards.
PCIE2 PCIE3
x16 N/A
TM
x16 x8
PCIE2 PCIE3
x16 N/A
TM
x8 x8
X299 Extreme4
PCIE4
N/A
N/A
PCIE4
N/A
N/A
19