2-9.1 Jfsb1 & Jfsb2: Cpu Frequency Select - SOLTEK SL-B8E-FG Manual

SL-B8E-FG / B8E-FGR
How to tackle the Jumpers:
1 2
If a pin-header (of 2 or more pins) is
designed in such a way that its pins
can be closed or linked together to
set up a specific function, this header
is called a jumper in this manual.
• A Jumper is usually but not necessarily given a "JpX" legend.
• In the Jumper setting diagram, the jumper pins covered with
black marks stand for closed pins with jumper cap.
1
Jp X
Jumper with
Pin 2-3 closed
• Do not remove any jumper cap when power is on. Always
make sure the power is off before changing any jumper settings.
Otherwise, the mainboard will be damaged.
2-9.1 JFSB1 & JFSB2: CPU Frequency Select
JFSB1 and JFSB2 are designed on board for CPU frequency select.
1. Setting JFSB1 1-2 closed and JFSB2 1-2 closed will allow CPU on
board to Auto Detect its own frequency and apply it to the System
Bus.
2. Setting JFSB1 2-3 closed and JFSB2 2-3 closed is for 100 MHz CPU.
3. Setting JFSB1 2-3 closed and JFSB2 open is for 133 MHz CPU.
4. Setting JFSB1 open and JFSB2 2-3 closed is for 200MHz CPU. If
200MHz is an overclock for your CPU, it may or may not boot your
system. If an overclok fails to boot system, you should restore the
default setting and then clear CMOS to reboot your system. (See
Clear CMOS in next paragraph.)
Auto-Detect
1
1
3
A 3-pin Jumper
3 1
Jumper with
all pins opened
JFSB1&JFSB2: CPU Frequency Select
CPU
(400MHz FSB)
100MHz CPU
(default)
Selected
JFSB1
JFSB1
1
1
JFSB2
JFSB2
A 2-pin
Jumper
Cap
The conductor inside the cap
links two header-pins together.
3 1
Jumper with
Pin 1-2 closed
(800MHz FSB)
(533MHz FSB)
133MHz CPU 200MHz CPU
Selected Selected
JFSB1
JFSB1
1
1
1
1
JFSB2
JFSB2
28
3