Irq Assignments For This Motherboard - Asus M5A99FX PRO R2.0 Manual

• In single VGA card mode, use the PCIe 2.0 x16_1 slot (navy blue) for a PCI Express
x16 graphics card to get better performance.
• In CrossFireX™ or SLI™ mode, use the PCIe 2.0 x16_1 and PCIe 2.0 x16_3 slots for
PCI Express x16 graphics cards to get better performance.
• We recommend that you provide sufficient power when running CrossFireX™ or SLI™
mode. Refer to page 2-28 for details.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2/3 when
using multiple graphics cards for better thermal environment.

IRQ assignments for this motherboard

PCIe x16_1
PCIe x16_2
PCIe x16_3
PCIe x16_4
PCIe x1
PCI
ASM SATA
USB 3.0_1
USB 3.0_2
Realtek 8111F (LAN)
On Chip SATA
On Chip USB_1
On Chip USB_2
On Chip USB_3
HD Audio
ASUS M5A99FX PRO R2.0
A B C
shared – –
shared – –
shared –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – shared
– – –
– – –
shared – –
D E F
– – –
– – –
– – –
– shared –
– – –
– shared –
– shared –
– – shared
– – –
– – –
shared – –
– – –
– shared –
– – –
– – –
G H
– –
– –
– –
– –
– shared
– –
– –
– –
shared –
– shared
– –
– –
– –
shared –
– –
1-23