Asus a7n8xx A7N8X-X User's Manual - Page 19

Normally, 6 IRQs are free for expansion cards. Sometimes IRQs are "shared" by more than one function; in this case, IRQ assignments are swapped automatically or adjusted through the BIOS firmware. 1.8.2 Standard Interrupt Assignments IRQ 0 1 2 3* 4* 5* 6 7* 8 9* 10* 11* 12* 13 14* 15* Standard Function System Timer Keyboard Controller Programmable Interrupt Controller USB Universal Host Controller Communications Port (COM1) Onboard Audio Standard Floppy Disk Controller Printer Port (LPT1) System CMOS/Real Time Clock Onboard LAN USB Universal Host Controller External AGP card PS/2 Compatible Mouse Port Numeric Data Processor Primary Ultra ATA Controller Secondary Ultra ATA Controller *These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard A B shared used shared - C - - used - - D - used - - - PCI slot 1 PCI slot 2 PCI slot 3 PCI slot 4 PCI slot 5 1.8.3 AGP slot This motherboard has an Accelerated Graphics Port (AGP) slot that supports +1.5V AGP 8X cards. Note the notches on the card golden fingers to ensure that they fit the AGP slot on your motherboard. ® A7N8X-X Keyed for 1.5v A7N8X-X Accelerated Graphics Port (AGP) ASUS A7N8X-X Motherboard 1-9