Expansion Slots (Pci Express Slots) - ASROCK Z270 Extreme4 User Manual

2.4 Expansion Slots (PCI Express Slots)

There are 6 PCI Express slots on the motherboard.
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.
PCIe slots:
PCIE1 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE3 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards.
PCIE5 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE6 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.
PCIe Slot Configurations
Single Graphics Card
Two Graphics Cards in
CrossFireX TM or SLI
Mode
Three Graphics Cards in
TM
3-Way CrossFireX
For a better thermal environment, please connect a chassis fan to the motherboard's chas-
sis fan connector (CHA_FAN1, CHA_FAN2 or CHA_FAN3 ) when using multiple graphics
cards.
PCIE2
x16
TM
x8
x8
Mode
PCIE4 PCIE6
N/A N/A
x8 N/A
x8 x4
Z270 Extreme4
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