Asus Z170-K, User Manual, Page: 21 / 85

ASUS Z170-K
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• In single VGA card mode, use the PCIe 3.0 x16_1 slot (gray) for a PCI Express x16
graphics card 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.
VGA configuration
PCI Express operating mode
PCIe 3.0 x16_1 (gray)
PCIe 3.0 x16_2
(black, x4 mode)
Single VGA/PCIe card
x16 (Recommended for single VGA
card)
N/A
Dual VGA/PCIe cards x16 x4
IRQ assignments for this motherboard
A B C D E F G H
PCIEx16_1 shared – – – – – – –
PCIEx16_2 shared – – – – – – –
PCIEx1_1 – – shared – – – – –
PCIEx1_2 – – – shared – – – –
PCI 1 – – shared – – – – –
PCI 2 – – – shared – – – –
Realtek 8111H LAN – – – shared – – – –
HD Audio shared – – – – – – –
SATA Controller shared – – – – – – –
XHCI Controller shared – – – – – – –