Gigabyte GA-686LX User Manual page 3

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I. Quick Installation Guide:
CPU SPEED SETUP
The default system bus speed is fixed to 66.6MHz. The user can change the
DIP SWITCH (SW) selection to set up the CPU speed for 200 - 366MHz
processor.
The CPU speed MUST match with the frequency RATIO. It will cause
system hanging up if the frequency RATIO is higher than that of CPU.
DIP SWITCH (SW)
1
2
3
ON
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
Main Clock
66 MHz
FREQ.
EXT.CLK.
RATIO
MHz
4
ON
3
66
ON
3.5
66
66
ON
4
66
ON
4.5
66
ON
5
66
ON
5.5
JP4
1-2
INT.CLK.
MHz
Pentium ® II 200 MHz
200
Pentium ® II 233 MHz
233
Pentium ® II 266 MHz
266
Pentium ® II 300 MHz
300
Pentium ® II 333 MHz
333
Pentium ® II 366 MHz
366
JP3
1-2
2
Quick Installation Guide
CPU Type
JP2
1-2

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