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UPER P4SGA/P4SGL/P4SGR/P4SGE User's Manual
2-7
Jumper Settings
Explanation of
Jumpers
To modify the operation of the
motherboard, jumpers can be used
to choose between optional set-
tings. Jumpers create shorts be-
tween two pins to change the
function of the connector. Pin 1 is
identified with a square solder pad
on the printed circuit board. See
the motherboard layout pages for
jumper locations.
Note:
On a two-pin jumper,
"Closed" means the jumper is on
both pins and "Open" means the
jumper is either on only one pin or
completely removed.
Connector
Pins
Jumper
Cap
Setting
Pin 1-2 short
3 2 1
3 2 1
CMOS Clear
JBT1 is used to clear CMOS. Instead
of pins, this jumper consists of con-
tact pads to prevent accidentally
clearing the contents of CMOS.
To clear CMOS,
1) First unplug the power cord(s) .
2) With the power disconnected, short
the CMOS pads with a metal object
such as a small screwdriver.
3) Remove the screwdriver (or short-
ing device).
4) Reconnect the power cord(s) and
power on the system.
Note:
Do not use the PW_ON con-
nector to clear CMOS.
