Irq Assignments For This Motherboard - Asus SABERTOOTH Z77 User Manual

• In single VGA card mode, use the PCIe 3.0 x16_1 slot (beige) for a PCI Express x16
graphics card to get better performance.
• In CrossFireX™ or SLI™ mode, use the PCIe 3.0 x16_1 and PCIe 3.0 x16_2 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 2-24 for details.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when using
multiple graphics cards for better thermal environment. See page 2-22 for details.
PCIe x16_3 configuration
PCIE x16_3 PCI Express sharing mode
Configuration
PCIE x16_3
x1 mode x1
x4 mode* x4
Refer to 3.5.6 Onboard Devices Configuration for details.

IRQ assignments for this motherboard

PCIEX16_1
PCIEX16_2
PCIEX16_3
PCIEX1_1
PCIEX1_2
PCIEX1_3
Intel SATA
USB 2.0 #0
USB 2.0 #1
USB 3.0
HD Audio
Intel LAN
ASM USB 3.0
ASM1061 #0
ASM1061 #1
ASUS SABERTOOTH Z77
PCIE x1_1
x1
N/A
A B C
shared – –
shared – –
– shared –
– shared –
– – shared
– – –
– – –
– – –
shared – –
shared – –
– – –
– – –
shared – –
– – shared
– – –
PCIE x1_2 PCIE x1_3
x1 x1
N/A N/A
D E F
– – –
– – –
– – –
– – –
– – –
shared – –
shared – –
– – –
– – –
– – –
– – –
– shared –
– – –
– – –
shared – –
G H
– –
– –
– –
– –
– –
– –
– –
– shared
– –
– –
shared –
– –
– –
– –
– –
2-13