1.10 Expansion slots
The motherboard has three 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.
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 |
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 | Advance AC’97 CODEC |
11* | 6 | Standard PCI Graphics Adapter (VGA) |
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 | E | F | G | H |
PCI slot 1 | — | used | — | — | — | — | — | — |
PCI slot 2 | — | — | used | — | — | — | — | — |
PCI slot 3 | — | — | — | used | — | — | — | — |
AGP slot | used | — | — | — | — | — | — | — |
Onboard USB controller HC0 | — | — | — | — | shared | — | — | — |
Onboard USB controller HC1 | — | — | — | — | shared | — | — | — |
Onboard USB controller HC3 | — | — | — | — | shared | — | — | — |
EHCI | — | — | — | — | shared | — | — | — |
Onboard LAN | — | — | — | — | — | used | — | — |
Onboard audio | — | — | — | — | — | — | used | — |
ASUS |