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NOTE!
When you install DIMM module fully into the DIMM socket the eject tab should be
locked into the DIMM module very firmly and fit into its indention on both sides.
For the DDR SDRAM CLOCK is set at 400MHz, use only DDR2 800- compliant DDR2
WARNING!
Modules. When this motherboard operate at 400Mhz, most system will not even boot if non-
compliant modules are used because of the strict timing issues, if your DDR Modules are
not DDR2 800-compliant, set the SDRAM clock to 200MHz to ensure system stability.
2-5 Expansion Cards
WARNING!
Turn off your PC while adding or removing expansion cards or other system components.
Failure to do so may cause severe 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
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.
Priority
N/A
System Timer
N/A
Keyboard Controller
N/A
Programmable Interrupt
8
Communications Port (COM2)
9
Communications Port (COM1)
6
Sound Card (sometimes LPT2)
11
Floppy Disk Controller
7
Printer Port (LPT1)
N/A
System CMOS/Real Time Clock
10
ACPI Mode when enabled
3
IRQ Holder for PCI Steering
2
IRQ Holder for PCI Steering
4
PS/2 Compatible Mouse Port
N/A
Numeric Data Processor
5
Primary IDE Channel
1
N / A
Standard function
20
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