Gigabyte 6BX User Manual page 5

6BX
I. Set system speed to 66MHz: JP6 pin 1-2 short will cause
system always run at 66 MHz FSB (Front Side Bus).
JP6
1 2 3
II. Set system speed to 100MHz: JP6 pin 1-2-3 open will cause
system always run at 100MHz FSB.
JP6
1 2 3
III. Set system speed to Auto: auto detect system speed
(66/100MHz FSB)
JP6
1 2 3
There are two ways to set system speed
1. 66MHz (JP6) (1-2 short) or Auto detect (2-3 short)
2. 100MHz (JP6) (1-2-3 open) or Auto detect (2-3 short)
1. Pentium  II 300 / 100MHz FSB
PIIX4
4 3 2 1
JP6
1
JP6
OFF
1 2 3
ON
SW
3
CPU
Intel
440BX
JP6
1 2 3