Asus P5VDC-X Motherboard Installation Guide - Page 33

1.8.3 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 Standard Function System Timer Keyboard Controller Re-direct to IRQ#9 Communications Port (COM2)* Communications Port (COM1)* IRQ holder for PCI steering* Floppy Disk Controller Printer Port (LPT1)* System CMOS/Real Time Clock IRQ holder for PCI steering* IRQ holder for PCI steering* IRQ holder for PCI steering* PS/2 Compatible Mouse Port* Numeric Data Processor Primary IDE Channel Secondary IDE Channel * These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard PCI slot 1 PCI slot 2 PCI slot 3 PCI x4 slot* Onboard USB controller 1 Onboard USB controller 2 Onboard USB controller 3 Onboard USB controller 4 Onboard USB 2.0 controller Onboard LAN Onboard audio A B C D E F G H shared - - - - - - - - shared - - - - - - - - shared - - - - - - - - - - - - shared shared - - - - - - - - shared - - - - - - - - shared - - - - - - - - shared - - - - - - shared - - - - - shared - - - - - - - - shared - - - - - - When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments; otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable. ASUS P5VDC-X 1-21