Asus Z97-K/USB3.1 Manual page 21

1.5.6 PCI Express 3.0/2.0 x16 slot
This motherboard has a PCI Express 3.0/2.0 x16 slot that supports PCI Express 3.0/2.0 x16
graphic cards complying with the PCI Express specifications.
VGA configuration
Single VGA/PCIe
card
Dual VGA/PCIe
card
• In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (gray) for a PCI Express
x16 graphics card to get better performance.
• We recommend that you provide sufficient power when using multiple graphics cards.
See page 1-19 for details.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when
using multiple graphics cards for better thermal environment.
IRQ assignments for this motherboard
I.G.D.
HD Audio
EHCI 1
EHCI 2
XHCI
SATA
LAN
PCIEx16_1
PCIEx16_2
PCIEx1_1
PCIEx1_2
PCI_1
PCI_2
Asmedia
U3.1
ASUS Z97-K/USB 3.1
PCI Express operating mode
PCIe 3.0/2.0 x16_1 (gray)
x16 (Recommended for single VGA
card)
x16
A B
shared –
– –
– –
– –
– –
– –
– – shared
shared –
shared –
– – shared
– –
– –
shared –
– –
shared –
PCIe 2.0 x16_2
N/A
x2
C D E
– – –
– – –
– – –
– – –
– – –
– shared –
– –
– – –
– – –
– –
– shared –
– shared –
– – –
– – –
– – –
F G H
– – –
– shared –
– – shared
shared – –
shared – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
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