Asus H87-PRO H87-PRO User's Manual - Page 26

IRQ assignments for this motherboard, Product introduction

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VGA Configuration Single VGA/PCIe card Dual VGA/PCIe card PCI Express operating mode PCIe 3.0/2.0 x16_1 PCIe 2.0 x16_2 x16 (Recommended for single VGA) N/A x16 x4 • In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (yellow) for a PCI Express x16 graphics card to get better performance. • We recommend that you provide sufficient power when running CrossFireX™. • Connect a chassis fan to the motherboard connector labeled CHA_FAN1-3 when using multiple graphics cards for better thermal environment. • The PCIe x16_2 slot shares bandwidth with PCIe x1_1 and PCIe x2 slots. The default setting is x2 mode. Go to the BIOS Setup to change the settings. IRQ assignments for this motherboard Component LAN PCIE x16_1 PCIE x16_2 PCIE x1_1 PCIE x1_2 PCI_1 PCI_2 PCI_3 Intel® PCH SATA Controller HD Audio USB 2.0_1 USB 2.0_2 USB 3.0 A B C D E F G H - - shared - - - - - shared - - - - - - - shared - - - - - - - - - shared - - - - - - - - shared - - - - - - - shared - - - - shared - - - - - - - - shared - - - - - - - - - shared - - - - - - - - - - shared - - - - - - - - shared - - - - shared - - - - - - - - shared - - Chapter 1 1-12 Chapter 1: Product introduction

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1-12
Chapter 1: Product introduction
Chapter 1
•
In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (yellow) for a PCI Express
x16 graphics card to get better performance.
•
We recommend that you provide sufficient power when running CrossFireX™.
•
Connect a chassis fan to the motherboard connector labeled CHA_FAN1-3 when
using multiple graphics cards for better thermal environment.
•
The PCIe x16_2 slot shares bandwidth with PCIe x1_1 and PCIe x2 slots. The default
setting is x2 mode. Go to the BIOS Setup to change the settings.
VGA Configuration
PCI Express operating mode
PCIe 3.0/2.0 x16_1
PCIe 2.0 x16_2
Single VGA/PCIe card
x16
(Recommended for single VGA)
N/A
Dual VGA/PCIe card
x16
x4
IRQ assignments for this motherboard
Component
A
B
C
D
E
F
G
H
LAN
–
–
shared
–
–
–
–
–
PCIE x16_1
shared
–
–
–
–
–
–
–
PCIE x16_2
shared
–
–
–
–
–
–
–
PCIE x1_1
–
–
shared
–
–
–
–
–
PCIE x1_2
–
–
–
shared
–
–
–
–
PCI_1
–
–
–
shared
–
–
–
–
PCI_2
shared
–
–
–
–
–
–
–
PCI_3
–
shared
–
–
–
–
–
–
Intel
®
PCH SATA
Controller
–
–
–
shared
–
–
–
–
HD Audio
–
–
–
–
–
–
shared
–
USB 2.0_1
–
–
–
–
–
–
–
shared
USB 2.0_2
–
–
–
–
shared
–
–
–
USB 3.0
–
–
–
–
–
shared
–
–