Asus Maximus iv extreme rev 3, User Manual, Page: 47 / 196

IRQ assignments for this motherboard
A B C D E F G H
PCIEx16/8�1 shared – – – – – – –
PCIEx16�2 – shared – – – – – –
PCIEx8�3 – shared – – – – – –
PCIEx16�4 – shared – – – – – –
EHCI#0 (USB2.0) – – – – – – – shared
EHCI#1 (USB2.0) – – – – – – – shared
High Definition Audio – – – – – – shared –
SATA #0 – – – – shared – – –
SATA #1 – – – – shared – – –
NEC USB3.0#0 – shared
– –
– – – –
NEC USB3.0#1 – shared
– – – – – –
JMB362
– – – shared – – – –
Marvell9182 shared – – – – – – –
Intel 82583 – – shared – – – – –
Intel 82579 – – – shared – – – –
PCIEx4 shared – – – – – – –
PCIEx1 shared – – – – – – –
Single VGA Dual VGA Triple VGA
PCIE_X16/8_1 x16 (Native) x8 (Native) x8 (Native)
PCIE_X16_2 — — x16 (via NF200)
PCIE_X8_3 — x8 (Native) —
PCIE_X16_4 — — x16 (via NF200)
• In single VGA card mode, use the PCIE�X16/X8�1 slot for a PCI Express
x16 graphics card to get better performance.
• In CrossFireX™ or SLI™ mode, use the PCIE�X16/8�1 and PCIEX8�3
slots for PCI Express x16 graphics cards to get better performance.
• In 3-way SLI mode, use the PCIE�X16/8�1, PCIE�X16�2 and PCIE�X16�4
slots for PCI Express x16 graphics cards to get better performance.
• Connect a chassis fan to the motherboard connector labeled CHA�FAN1/2/3
when using multiple graphics cards for better thermal environment.
ASUS Maximus IV Extreme-Z 2-15