Expansion Slots (Pci Express Slots) - ASROCK Fatal1ty X99 Professional Series User Manual

2.4 Expansion Slots (PCI Express Slots)

There are 5 PCI Express slots and 1 mini-PCI Express slot 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.
mini-PCIe slots:
MINI_PCIE1 (mini-PCIe slot) is used for WiFi module.
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 3.0 x16 slot) is used for PCI Express x8 lane width cards, such as
Thunderbolt™ add-in card.
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 Configurations (For CPU with 40 PCIe lanes)
Single Graphics Card
Two Graphics Cards in
TM
CrossFireX or SLI
Mode
Three Graphics Cards in
TM
3-Way CrossFireX
TM
or 3-Way SLI Mode
Four Graphics Cards in
TM
4-Way CrossFireX
TM
or 4-Way SLI Mode
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.
PCIE1 PCIE2
x16
TM
x16
Mode
x8
Mode
x8
Fatal1ty X99 Professional Series
PCIE3 PCIE4
N/A N/A N/A
N/A N/A x16
x8 N/A x16
x8 N/A x8
PCIE5
N/A
N/A
N/A
x8
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