5 pci express x16 slots, Pci express x16 slots -21, Irq assignments for this motherboard – Asus F2A55-M User Manual
Page 33
ASUS F2A55-M
1-21
•
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 1-26 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
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
PCIe x16_1
-
-
shared
-
-
-
-
-
PCIe x16_2
shared
-
-
-
-
-
-
-
PCIe x1_1
shared
-
-
-
-
-
-
-
PCI slot
-
-
-
-
shared
-
-
-
AMD FCH SATA Controller
-
-
-
shared
-
-
-
-
AMD FCH USB 1.1
Controller
-
-
shared
-
-
-
-
-
AMD FCH USB 2.0
Controller
-
-shared
-
-
-
-
-
-
ASMedia USB3.0
Controller
-
-
shared
-
-
-
-
-
HD Audio Controller
shared
-
-
-
-
-
-
-
Onboad VGA
-
shared
-
-
-
-
-
-