Asus P4V800-X - Manual (Page 24)

1-14 Chapter 1: Product introduction
1.10 Expansion slots
The motherboard has five PCI slots and one Accelerated Graphics Port (AGP) slot.
To install and configure an expansion card:
1. Install an expansion card following the instructions that came with the chassis.
NOTE: The AGP slot supports only 1.5V and 0.8V AGP cards.
2. Turn on the system and change the necessary BIOS settings, if any. See
Chapter 2 for BIOS information.
3. Assign an IRQ to the card. Refer to the tables below.
4. Install the drivers and/or software applications for the expansion card
according to the card documentation.
1.10.1 Standard interrupt assignments
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 N/A Programmable Interrupt
3* 11 Communications Port (COM2)
4* 12 Communications Port (COM1)
5* 13 Sound card (sometimes LPT2)
6 14 Floppy Disk Controller
7* 15 Printer Port (LPT1)
8 3 System CMOS/Real Time Clock
9* 4 ACPI Mode when used
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
15* 10 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
1.10.2 IRQ assignments for this motherboard
A B C D
PCI slot 1 — shared — —
PCI slot 2 — — shared —
PCI slot 3 — — — used
PCI slot 4 shared — — —
PCI slot 5 — shared — —
AGP slot shared — — —
Onboard USB controller HC0 shared — — —
Onboard USB controller HC1 shared — — —
Onboard USB controller HC2 — shared — —
Onboard USB controller HC3 — shared — —
Onboard USB 2.0 controller — — shared —
Onboard LAN shared — — —
Onboard audio — — shared —