Asus M2N4-SLI M2N4-SLI English Edition User's Manual - Page 37
Interrupt assignments, PCI slots - compatible processors
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2.5.3 Interrupt assignments Standard interrupt assignments IRQ Priority Standard function 0 1 System Timer 1 2 Keyboard Controller 2 - Redirect to IRQ#9 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 * These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard A B C D E F G H PCI Slot 1 shared PCI Slot 2 shared PCIe x16 slot 1 shared PCIe x16 slot 2 shared PCIe x1 slot 1 shared PCIe x1 slot 2 shared 2.5.4 PCI slots The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications. Refer to the figure below for the location of the slots. ASUS M2N4-SLI 2-17