User Guide

Chapter 2: Hardware Setup

2-20

2.8.2 Configuring an expansion card

IRQ assignments for this motherboard

VGA configuration

PCI Express operating mode

PCIe 3.0 x16_1 (gray) PCIe 3.0 x16_2

Single VGA/PCIe card

x16(Recommendedforsingle

VGAcard)

N/A

Dual VGA/PCIe cards x16 x4

• InsingleVGAcardmode,usethePCIe3.0x16_1slot(gray)foraPCIExpressx16

graphics card to get better performance.

• WerecommendthatyouprovidesufcientpowerwhenrunningCrossFireX™mode.

• ConnectachassisfantothemotherboardconnectorlabeledCHA_FAN1/2when

using multiple graphics cards for better thermal environment.

WhenusingPCIcardsonsharedslots,ensurethatthedriverssupport“ShareIRQ”orthat

thecardsdonotneedIRQassignments.Otherwise,conictswillarisebetweenthetwoPCI

groups,makingthesystemunstableandthecardinoperable.

A B C D E F G H

HDAudioController shared – – – – – – –

XHCI shared – – – – – – –

SATA Controller shared – – – – – – –

LAN Controller – – – shared – – – –

PCIEx1_1 shared – – – – – – –

PCIEx1_2 – shared – – – – – –

PCIEx16_1 shared – – – – – – –

PCIEx16_2 shared – – – – – – –

M.2 shared – – – – – – –

AsmediaPCIEtoPCIController – – shared – – – – –