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2-5 Expansion Cards
WARNING!
Turn off your power when adding or removing expansion cards or
other system components.
damage to both your motherboard and expansion cards.
2-5-1 Procedure For Expansion Card Installation
1. Read the documentation for your expansion card and make any necessary
hardware or software setting for your expansion card such as jumpers.
2. Remove your computer's cover and the bracket plate on the slot you intend to use.
3. Align the card's connectors and press firmly.
4. Secure the card on the slot with the screen you remove above.
5. Replace the computer system's cover.
6. Set up the BIOS if necessary.
7. Install the necessary software driver for your expansion card.
2-5-2 Assigning IRQs For Expansion Card
Some expansion cards need an IRQ to operate. Generally, an IRQ must exclusively
assign to one use. In a standard design, there are 16 IRQs available but most of them
are already in use.
Standard Interrupt Assignments
IRQ
Priority
0
1
2
3 *
4 *
5 *
6
7 *
8
9 *
10 *
11 *
12 *
13
14 *
15 *
* These IRQs are usually available for ISA or PCI devices.
2-5-3 Interrupt Request Table For This Motherboard
1
System Timer
2
Keyboard Controller
N/A
Programmable Interrupt
11
Communications Port (COM2)
12
Communications Port (COM1)
13
Sound Card (sometimes LPT2)
14
Floppy Disk Controller
15
Printer Port (LPT1)
3
System CMOS/Real Time Clock
4
ACPI Mode when enabled
5
IRQ Holder for PCI Steering
6
IRQ Holder for PCI Steering
7
PS/2 Compatible Mouse Port
8
Numeric Data Processor
9
Primary IDE Channel
10
Secondary IDE Channel
Failure to do so may cause severe
Standard function
13
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