Asus P7P55D-E PREMIUM User Manual - Page 41
Interrupt assignments
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Chapter 2 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 Reserved 7 15 Reserved 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 Reserved 13 8 Numeric Data Processor 14 9 Primary IDE Channel * These IRQs are usually available for PCI devices. IRQ assignments for this motherboard A B C D E F G H PCIE x16_1 shared - - - - - - - PCIE x16_2 - shared - - - - - - PCI_1 shared - - - - - - - PCI_2 - shared - - - - - - USB 2.0 controller 1 - - - - - - - shared USB 2.0 controller 2 shared - - - - - - - LAN_1 - - - shared - - - - LAN_2 - - - shared - - - - SATA controller - - - - - shared - - Marvell SATA Controller - shared - - - - - - Onboard ATA controller - - shared - - - - - 1394 controller - - shared - - - - - HD Audio - - - - - - shared - ASUS P7P55D-E Premium 2-21