Asus H-97-PRO, Manual, Page: 24 / 148

1-10 Chapter 1: Product introduction
Chapter 1
• In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (gray) for a PCI Express
x16 graphics card to get better performance.
• We recommend that you provide sufficient power when running CrossFireX™ mode.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2/3 when
using multiple graphics cards for better thermal environment.
• The PCIe x1_1 and PCIe x1_2 slots share bandwidth with the PCIe x16_2 slot.
The PCIe x16_2 slot runs at x2 mode as default. Please check BIOS for more
configuration.
IRQ assignments for this motherboard
A B C D E F G H
PCIe x16_1 shared – – – – – – –
PCIe x16_2 shared – – – – – – –
PCI1 – –
–
shared
– – – –
PCI2 shared
– –
–
– – – –
PCI3 – shared – – – – – –
Intel
®
SATA Controller
– –
– shared
– – – –
Intel
®
LAN
– –
–
–
shared
– – –
Intel
®
xHCI – – – – – shared – –
Intel
®
EHCI 1 – – – – – – – shared
Intel ® EHCI 2
shared
– – – – – –
–
HD Audio – – – – – – shared –
VGA configuration
PCI Express 3.0 operating mode
PCIe 3.0/2.0 x16_1 PCIe 3.0/2.0 x16_2
Single VGA/PCIe card
x16 (single VGA
recommended)
N/A
Dual VGA/PCIe card x16 x4