User guide

2-12 Chapter 2: Hardware information
Chapter 2
IRQ assignments for this motherboard
A B C D E F G H
PCIE x16_1 shared – – – – – – –
PCIE x16_2 – – – – – – – shared
PCIE x16_3 shared – – – – – – –
PCIE x16_4 shared
– – – – – – –
PCI Slot1
– – – –
shared –
– –
PCI Slot2 – – – – – shared – –
Realtek 8111E (LAN)
– –
– –
shared
– –
–
ASM USB3.0 – – shared – – – – –
Onchip SATA Controller – – – shared – – – –
Onchip USB1
– –
shared –
– –
–
–
Onchip USB2 –
– shared
– – – – –
Onchip Azalia shared – – – – – – –
• In single VGA card mode, use the PCIe 2.0 x16_1 slot (blue) for a PCI Express x16
graphics card to get better performance.
• In CrossFireX™ mode, use the PCIe 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 sufcient 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. See page 2-18 for details.