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2.5.3
Interrupt assignments
Standard Interrupt assignments
IRQ
Priority
0
1
1
2
2
-
3*
11
4*
12
5*
13
6
14
7*
15
8
3
9*
4
10*
5
11*
6
12*
7
13
8
14*
9
15*
10
* These IRQs are usually available for ISA or PCI devices.
2.5.4
PCI Express x16 slot (x16 link)
The onboard PCIE6 slot provides one x16 Gen3 link and auto switches to x8 link if PCIE5 is
occupied. This slot supports VGA cards and various server class high performance add-on
cards.
2.5.5
PCI Express x8 slot (x8 link)
The onboard PCIE 4 and PCIE 5 provide one x8 Gen3 link. These slots support VGA cards
and various server class high performance add-on cards.
2.5.6
PCI Express x1 slot (x1 link)
The onboard PCIE 3 and PCIE 7 provide one x1 Gen2 link to the Intel
2.5.7
PCI slot
The PCI 1 and PCI 2 slots supports cards such as LAN, USB, and other cards that complies
with PCI specifications.
ASUS P9D-E/4L
Standard function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM2)
Communications Port (COM1)
--
Floppy Disk Controller
--
System CMOS/Real Time Clock
ACPI Mode when used
IRQ Holder for PCI Steering
IRQ Holder for PCI Steering
PS/2 Compatible Mouse Port
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
®
C224 PCH.
2-17
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