Asus F2A55-M LE F2A55-M LE User's Manual - Page 31

PCI Express x16 slots

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1.6.5 PCI Express x16 slots This motherboard supports two PCI Express x16 graphics cards that comply with the PCI Express specifications. VGA configuration Single VGA/PCIe card Dual VGA/PCIe card PCI Express operating mode PCIe x16_1 x16 (Recommended for single VGA card) x16 PCIe x16_2 N/A x4 • 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. • We recommend that you provide sufficient power when running CrossFireX™ mode. See page 1-24 for details. • Connect a chassis fan to the motherboard connector labeled CHA_FAN when using multiple graphics cards for better thermal environment. IRQ assignments for this motherboard A B C D E F G H PCIEx16_1 - - shared - - - - - PCIEx16_2 shared - - - - - - - PCIEx1_1 shared - - - - - - - PCI1 slot - - - - shared - - - Realtek LAN controller - shared - - - - - - HD audio shared - - - - - - - SATA controller - - - shared - - - - On Chip XHCI controller1 - - shared - - - - - On Chip XHCI controller2 - shared - - - - - - On Chip USB EHCI 1/2/3 - shared - - - - - - On Chip USB OHCI 1/2/3/4 - - shared - - - - - ASUS F2A55-M LE 1-19

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1.6.5
PCI Express x16 slots
This motherboard supports two PCI Express x16 graphics cards that comply with the PCI
Express specifications.
•
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.
•
We recommend that you provide sufficient power when running CrossFireX™ mode.
See page 1-24 for details.
•
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 x16_2
Single VGA/PCIe card
x16 (Recommended for single VGA card)
N/A
Dual VGA/PCIe card
x16
x4
IRQ assignments for this motherboard
A
B
C
D
E
F
G
H
PCIEx16_1
–
–
shared
–
–
–
–
–
PCIEx16_2
shared
–
–
–
–
–
–
–
PCIEx1_1
shared
–
–
–
–
–
–
–
PCI1 slot
–
–
–
–
shared
–
–
–
Realtek LAN controller
–
shared
–
–
–
–
–
–
HD audio
shared
–
–
–
–
–
–
–
SATA controller
–
–
–
shared
–
–
–
–
On Chip XHCI controller1
–
–
shared
–
–
–
–
–
On Chip XHCI controller2
–
shared
–
–
–
–
–
–
On Chip USB EHCI 1/2/3
–
shared
–
–
–
–
–
–
On Chip USB OHCI 1/2/3/4
–
–
shared
–
–
–
–
–
ASUS F2A55-M LE
1-19