3 interrupt assignments, 4 pci express x16 slot, Standard interrupt assignments – Asus M2N-L User Manual
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Chapter 2: Hardware information
2.5.3
Interrupt assignments
Standard interrupt assignments
* These IRQs are usually available for ISA or PCI devices.
IRQ
Priority Standard function
0
1
System Timer
1
2
Keyboard Controller
2
–
Redirect to IRQ#9
3
11
Communications Port (COM2)
4
12
Communications Port (COM1)*
5
13
IRQ Holder for PCI Steering*
6
14
Floppy Disk Controller
7
15
Printer Port (LPT1)*
8
3
System CMOS/Real Time Clock
9
4
IRQ Holder for PCI Steering*
10
5
IRQ Holder for PCI Steering*
11
6
IRQ Holder for PCI Steering*
12
7
PS/2 Compatible Mouse Port*
13
8
Numeric Data Processor
14
9
Primary IDE Channel
2.5.4
PCI Express x16 slot
This motherboard supports a PCI
Express x16 graphics card that comply
with the PCI Express specifications. The
figure shows a graphics card installed on
the PCI Express x 16 slot.