Manual for Advance 12 series
Jumper Settings
Jumpers are located on the motherboard, they represent, clear CMOS jumper JCC, enable
BIOS ProtectEasy function jumper JAV etc. Pin 1 of all jumpers are located on the side with
a thick white line ( Pin1
→
), refer to the motherboard’s silkscreen. Jumpers with
three pins will be shown as to represent pin1 & pin2 connected and
to
represent pin2 & pin3 connected.
FSB Frequency Selection(JFSB1, JFSB2)
The jumper labeled JFSB1 and JFSB2 are located on the motherboard providing users with
FSB frequency selection. If it is set as Auto with JFSB1 and JFSB2 closed, the system
detects the CPU front side bus automatically. If it is set as Jumper setting with JFSB1 and
JFSB2 opened, the CPU front side bus can be set manually.
Overclocking Jumper Setting (JCLK1, JCLK2)
Jumpers labeled JCLK1, JCLK2 are located on the motherboard providing users with CPU
overclocking feature. The host bus speed can be set as 66/100/133MHz. The table below for
your reference.
Chapter 2
FSB
AUTO
JUMPER SET
JFSB1
JFSB2
CLOSE
CLOSE
OPEN
OPEN
1
1
JFSB2
JFSB1
2
2
Note: “1-2” represents pin1 & pin2 closed;
“2-3”represents pin2 & pin3 closed.
JCLK1
2-3
HOST FREQUENCY
66MHz
100MHz
133MHz
1-2
JCLK2
1
1
1-2
2-3
2-3
1-2
JCLK2
JCLK1
2 3
2 3
