Pci Slot; Pci Express 2.0 X16 Slots - Asus CROSSHAIR IV EXTREME User Manual

2.5.4

PCI slot

The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other
cards that comply with PCI specifications. Refer to the figure below for the location
of the slot.
2.5.5

PCI Express 2.0 x16 slots

This motherboard has four PCI Express 2.0 x16 slots that support PCI Express
x16 2.0 graphic cards complying with the PCI Express specifications. Refer to the
figure below for the location of the slots.
PCI slot 1
PCI Express x16_1 slot
• In single VGA card mode, use first the PCIe 2.0 x16_1 slot for a PCI
Express x16 graphics card to get better performance.
• In CrossFireX™ mode, use the PCIe 2.0 x16_1 (red) and
PCIe 2.0 x16_3 (red) slots for PCI Express x16 graphics cards to get better
performance.
• We recommend that you provide sufficient power when running
CrossFireX™ mode. See page 2-38 for details.
• Connect a chassis fan to the motherboard connector labeled
CHA_FAN1/2/3 when using multiple graphics cards for better thermal
environment.
ROG Crosshair IV Formula
PCI Express x16_3 slot
PCI slot 2
PCI Express x16_2 slot
PCI Express x16_4 slot
2-25