User`s manual

Green PCI/ISA System Board
2-18 u Installation Overview
Default Settings:
J20 Off: 3.3VJ19 On: 3.3V
J21 Off: 3.3V
* Default setting
Voltage
3.3V *
3.45V
3.8V
J19
On
Off
Off
J20
Off
On
Off
J21
Off
Off
On
Jumper J22
CPU Mode Setting
Jumper J22 is used to select CPU internal frequency. You
should not change the default setting of this jumper unless
the CPU installed on the system board is 3.3V Pentium
Processor, System Base Clock frequency 50MHz.
Off:Fx1.5 (50MHz/
75MHz, 60MHz/90MHz
or 66MHz/100Mhz CPU)
(Default)
On: Fx2
(50MHz/100MHz)