8
Checking Jumper Settings
The following illustration shows the location of the mainboard jumpers. Pin 1 is
labeled.
CPUFAN1
C
A
S
F
A
N
1
PWRFAN1
D
I
M
M
1
D
I
M
M
2
ID
E
2
ATX1
A
T
X
2
C D I N 1
AGP1
PCI1
PCI2
PCI3
CNR1
B T 1
JP1
J3
JP2
W O L 1
L
U
S
B
2
L U S B 1
WOM1
P
A
N
E
L
1
S
P
E
A
K
E
R
1
L S I R 1
J
2
FLOPPY1
C D I N 2
L M D N 1
COM2
L
A
U
D
I
O
1
I
D
E
1
1
1
1
1
1
1
1
1
1
1
LED1
JP1
JP2
1
Jumper Settings
Jumper
Type
Description
Setting (
default
)
JP1
3-pin
Clear CMOS
1-2: Clear
2-3: Normal
JP1
1
JP2
2-pin
BIOS protect
Short: Enable
Open: Disable
JP2
Jumper 1
– Enables you to clear the BIOS. Follow these
instructions:
1.
Turn the system off.
2.
Short pins 1 and 2 on jumper 1.
3.
Return the jumper to the normal setting.
4.
Turn the system on. The BIOS is returned to
the default settings.
Jumper 2
– Enables you to prevent the BIOS from being updated
(flashed). Open the jumper if you are going to update
your BIOS. After updating the BIOS, short the jumper
to protect the BIOS from being flashed. For
instructions on updating the BIOS refer to Chapter 3.