Irq Assignments For This Motherboard - Asus Z77-A User Manual

• In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (blue) for a PCI Express
x16 graphics card to get better performance.
• In CrossFireX™ mode, use the PCIe 3.0/2.0 x16_1 and PCIe 2.0 x16_2 slots for PCI
Express x16 graphics cards 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.

IRQ assignments for this motherboard

Component
IGD
Audio Controller
EHCI Controller
XHCI Controller
SATA Controller
PCIEX16_1
PCIEX16_2
PCIEX1_1
PCIEX1_2
RTL8111F
PCI Slot 1
PCI Slot 2
ASUS Z77-A
A B C
shared –
– –
– –
shared –
– –
shared –
shared –
– – shared
– –
shared –
– shared
– – shared
D E
– – –
– – –
– –
– – –
– shared
– – –
– – –
– –
– shared –
– – –
– – –
– –
F G H
– – –
– shared
– – shared
– –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
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