Asus B85M-E R2.0, User Manual, Page: 19 / 74

ASUS B85M-E R2.0
1-11
1.5.3 PCI slot
The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specifications.
1.5.4 PCI Express 2.0 x1 slot
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specifications.
1.5.5 PCI Express 2.0 x16 slot
This motherboard has a PCI Express 2.0 x16 slot that supports PCI Express 2.0 x16 graphic
cards complying with the PCI Express specifications.
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.
IRQ assignments for this motherboard
A B C D E F G H
LAN
– – shared – – – – –
PCIE x16_1
shared – – – – – – –
PCIE x1_1
shared – – – – – – –
PCIE x16_2
shared – – – – – – –
Intel PCH SATA controller
– – – shared – – – –
HD Audio
– – – – – – shared –
USB2.0_1
– – – – – – – shared
USB2.0_2
– – – – shared – – –
USB3.0
– – – – – shared – –
• 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 running CrossFireX™ mode.
See page 1-15 for details.
• 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 3.0/2.0 x16_1 (gray) PCIe 2.0 x16_2
Single VGA/PCIe
card
x16 (Recommended for single VGA
card)
N/A
Dual VGA/PCIe
card
x16 x4