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2-7
Jumper Settings
Explanation of
Jumpers
To modify the operation of the moth-
erboard, jumpers can be used to
choose between optional settings.
Jumpers create shorts between two
pins to change the function of the
connector. Pin 1 is identified with a
square solder pad on the printed cir-
cuit board.
See the motherboard
layout pages for jumper locations.
Front Side Bus Speed
Use JP12 to change the FSB
speed. See Table 2-17 for jumper
settings. Also see the CPU Speed
setting on page 4-9 and the CPU
Clock Frequency setting on page
4-11. The CPU Speed setting will
show you the actual CPU speed
for each FSB speed option se-
lected. The CPU Clock Frequency
setting will show you additional
FSB speed options.
system does not reboot after
changing the CPU speed, clear
CMOS, reboot and then set the
correct CPU speed in BIOS. (See
CMOS Clear instructions on the
next page.)
Note: If the
2-11
Chapter 2: Installation
3
C o n n e c t o r
Pins
J u m p e r
C a p
3
Setting
Pin 1-2 short
Table 2-17
Front Side Bus Speed
Jumper Settings (JP12)
Jumper
Position
Definition
1-2
Auto
2-3
1 3 3 M H z
O F F
1 0 0 M H z
* Note: The Auto setting allows
the CPU to set the speed.
2
1
2
1
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