Irq Assignments For This Motherboard - Asus A88X-PLUS Owner's Manual

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15. PCI Express 2.0 x1 slots
This motherboard has two PCI Express 2.0 x1 slots that support PCI Express x1
network cards, SCSI cards, and other cards that comply with the PCI Express
specifications.

IRQ assignments for this motherboard

PCIEx1_1
PCIEx16_1
PCIEx1_2
PCIEx16_2
ASM1143
Realtek LAN controller
OnChip SATA controller
OnChip USB OHCI 1/2/3/4
OnChip USB EHCI 1/2/3
OnChip USB XHCI 1
OnChip USB XHCI 2
HD Audio
PCI_1
PCI_2
PCI_3
When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that
the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI
groups, making the system unstable and the card inoperable.
1-6
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 sufficient 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.
A
shared
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shared
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shared
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B C D
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– shared –
– – shared
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– shared –
– shared –
– – shared
– shared –
shared – –
– shared –
shared – –
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E F
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– –
– –
– –
– –
– –
– –
– –
– –
– –
shared –
– shared
– – shared
Chapter 1: Product introduction
G
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