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5 pci express x16 slots, Pci express x16 slots -20, Irq assignments for this motherboard – Asus F2A85-M2 User Manual

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1-20

Chapter 1: Product introduction

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.

Connect a chassis fan to the motherboard connector labeled CHA_FAN when using

multiple graphics cards for better thermal environment.

VGA configuration

PCI Express operating mode
PCIe x16_1

PCIe x4_1

Single VGA/PCIe card

x16 (Recommended for single VGA card)

N/A

Dual VGA/PCIe card

x16

x4

1.6.5

PCI Express x16 slots

This motherboard supports two PCI Express x16 graphics cards that comply with the PCI

Express specifications.

IRQ assignments for this motherboard

A

B

C

D

E

F

G

H

Onchip Chip SATA

-

-

-

V

-

-

-

-

Realtek 8111DP

-

V

-

-

-

-

-

-

PCI Slot

-

-

-

-

V

-

-

-

HD audio

V

-

-

-

-

-

-

-

On Chip USB OHCI 1/2/3/4

-

-

V

-

-

-

-

-

On Chip USB EHCI 1/2/3/4

-

V

-

-

-

-

-

-

On Chip USB XHCI 1

-

-

V

-

-

-

-

-

On Chip USB XHCI 2

-

V

-

-

-

-

-

-

PCIe X16

-

-

V

-

-

-

-

-

PCIe X1_1

V

-

-

-

-

-

-

-

PCIe X4_1

V

-

-

-

-

-

-

-