Chapter 2
XT4500
11
Jumper Settings
Jumpers are located on the mainboard, the clear CMOS jumper CLR_CMOS, etc. Pin 1 for all
jumpers are located on the side with a thick white line (Pin1
→
), referring to the
mainboard’
s silkscreen. Jumpers with three pins will be shown as
to represent
pin1 & pin2 (“1-2”) closed and
to represent pin2 & pin3 (“2-3”) closed.
Jumper Symbol Description Represent
1-2
set pin1 and pin2 closed
2-3
set pin2 and pin3 closed
close
set the pins closed
open
set the pins opened
Clear CMOS (CLR_CMOS)
If you want to clear CMOS, unplug the AC power supply first, close CLR_CMOS (pin1 &
pin2) once, set CLR_CMOS back to the normal status with pin2 & pin3 connected, then
power on the system.
1
Normal status
Clear CMOS
(Unplug the AC power supply)
1
3
2
3
2
