22
1
3
2
4
JP6
JP4
1
2
↓
↓
AMD-K5 CPUs
PR75 75MHz
PR90 90MHz
CPU CLK
50MHz
60MHz
JP4
Off
On
AMD-K5 CPUs
AMD-K5 CPUs
PR75 75MHz
PR90 90MHz
CPU CLK
50MHz
60MHz
Pin 1-2
On
On
Pin 3-4
On
Off
JP6
JP8
2
1
4
3
JP9
2
1
4
3
JP11
1
6
2
3
5
4
* Default
Voltage
2.8V
3.3V*
3.52V
JP9
1-2 On
1-2 On
3-4 On
JP11
1-3 On, 2-4 On
3-5 On, 4-6 On
3-5 On, 4-6 On
AMD-K5 CPUs
PR75 75MHz/
PR90 90MHz
CPU CLK
1.5x
Pin 1-2
Off
Pin 3-4
Off
JP8
↓
↓
Warning:
The default setting of JP9 and JP11 is 3.3V. If the voltage of CPU is not 3.3V ,
make sure you set JP9 and JP11 according to the voltage of your CPU, other-
wise, your system will hang.