Expansion Slot (Pci Express Slot) - ASROCK C226 WS+ User Manual

2.6 Expansion Slots (PCI Express Slots)
There are 4 PCI Express slots on this motherboard.
PCIE slots: PCIE1/PCIE3/PCIE5/PCIE7 (PCIE 3.0 x16 slot) is used for PCI Express
x16 lane width graphics cards.
Single Graphics Card
Two Graphics Cards in
CrossFireX
Three Graphics Cards in
3-Way CrossFireX
Four Graphics Cards in
4-Way CrossFireX
Please connect a chassis fan to the motherboard's chassis fan connector
(CHA_FAN1, CHA_FAN2 or CHA_FAN3) when using multiple graphics cards
for better thermal environment.
PCIE Slot Configurations
TM Mode
TM Mode
TM
Mode
PCIE1 PCIE3
x16 N/A
x16 N/A
x8 x8
x8 x8
21
PCIE5 PCIE7
N/A N/A
x16 N/A
x16 N/A
x8 x8