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ASUS X99-A
1-15
Chapter 1
IRQ assignments for this motherboard
A B C D E F G H
PCIe x16_1 shared – – – – – – –
PCIe x1_1 – shared – – – – –
PCIe x16_2 shared* – – – – – – –
PCIe x16_3 shared – – – – – – –
PCIe x1_2 – – – shared – – – –
PCIe x16_4 shared – – – – – – –
SMBUS Controller – – shared – – – – –
Intel
®
SATA Controller 1 – shared – – – – – –
Intel
®
SATA Controller 2 shared – – – – – – –
Intel
®
LAN1 (I218-V) – – – – shared – – –
Intel
®
xHCI – – – – – – – shared
Intel
®
EHCI 1 – – – – – shared – –
Intel
®
EHCI 2 – – shared – – – – –
HD Audio – – – – – – shared –
ASMedia U3 Controller – – shared – – – – –
* PCIe x16_2 is set to x1 mode by default. When the bandwidth is manually switched to x4 mode, the IRQ
assignment will be changed to A.