6
Technical Reference Booklet
Jumper Settings
Warning:
Please turn off AC Power before installing and removing any device.
If you can’t turn on system power, please clear CMOS and keyboard
password (JP28). Then try again.
This chapter explains how to configure the motherboard’s hardware. Before using your
computer, make sure all jumpers and DRAM modules are set correctly. Refer to this
chapter whenever in doubt.
CPU Speed Selection
When JP7 is installed on this motherboard, jumper is required to be set for different type
of CPU installed. The CPU speed is set by JP1 and JP7, please see JP7- Ratio of Processor
Core to System Bus Frequency table.
When JP7 is not installed on this motherboard, jumperless feature is implemented such
that no jumper is required to be set for different type of CPU installed.
The CPU speed is set in “CPU Speed Setting” of CMOS Setup.
Notice:
1.
Be sure to save the CMOS setting when exit the CMOS.
2.
Celeron PGA370 CPU is frequency multiplier locked, no CPU speed change
will be seen even if the frequency multiplier setting in CMOS setup is changed.
JP1 - Host Bus Speed Select
JP1
HCLK
(Close)*
Auto*
(Open)
100 MHz
JP4 - CMOS Clear
JP4
Selection
(1-2)*
Normal*
(2-3)
CMOS Clear
Close Open
JP4
JP28
1
1
JP23
JP8
1
1
* = Default setting.
JP1
1
JP20
1
1
1
JP29
1