Expansion Slots (Pci And Pci Express Slots) - ASROCK FM2A78 PRO4+ User Manual

2.4 Expansion Slots (PCI and PCI Express Slots)

There are 3 PCI slots and 4 PCI Express slots on this 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 documenta-
tion of the expansion card and make necessary hardware settings for the
card before you start the installation.
PCI Slots: PCI slots are used to install expansion cards that have the 32-bit PCI
interface.
PCIE Slots:
PCIE1 / PCIE3 (PCIe 2.0 x1 slot) is used for PCI Express cards with x1
lane width cards.
PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graph-
ics cards.
PCIE4 (PCIe 2.0 x16 slot) is used for PCI Express x4 lane width graph-
ics cards.
PCIe Slot Configurations
Single Graphics Card
Two Graphics Cards in
CrossFireX
For a better thermal environment, please connect a chassis fan to the moth-
erboard's chassis fan connector (CHA_FAN1, CHA_FAN2 or CHA_FAN3)
when using multiple graphics cards.
TM
Mode
20
PCIE2 PCIE4
x16 N/A
x16 x4