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X7DBU/X7DGU User's Manual
J
W
OR1
CO
M
2
J
7
J
BT
1
J
W
OL1
J
PL1
J
PL2
J
30
J
L1
J
OH1
J
D
1
F
an
2
LE
1
J
F
1
F
P
CT
RL
J
PW
1
J
17
LE2
SW1
J11
I2C1
I2C2
J
PG1
Rear UID
E
S
10
00
V
id
e
o
CT
RL
Inte
l
E
S
B
2
(S
outh B
ridge
)
US
B4
J
W
D
J
K1
US
B
2
/3
J
1
8
S
MB
C
P
U1
J
PW
3
COM1
VGA
LAN1
LAN2
J
28
S
XB2:
PCI-E
x8
S
XB1:
PCI-E
x16
PCI-X
133 M
Hz
(
Nor
t
h Br
idge)
Vid
e
o
M
e
m
o
r
y
X7DBU
J
29
F
an
4
F
an
8
CPU
F
A
N2
F
an
3
F
an
1
20
-P
in
M
a
in
PW
R
J
PW
2
4-Pin
PW
R
8-Pin
PW
R
F
an
7
CPU
F
an
1
PW
R
S
M
B
Fa
n
5
F
a
n
6
Bu
zz
e
r
S
P1
J9B2
J9B1
J8B3
J8B2
J8B1
J7B3
J7B2
J7B1
D
IMM
4B
S
GPIO
1
S
GPIO2
J
27
UI
O
PW
R
LA
N
C
T
RL
J
LA
N2
J
LA
N
1
J
15
J
COM
1
J
KM1
Bank1
I-S
A
T
A
0
I-SA
T
A
1
I-SA
T
A
2
I-
S
A
T
A
3
I-SA
T
A
4
I-
S
A
T
A
5
B
IO
S
J
22
F
lo
p
p
y
S
IM
S
O
ID
E
#
1
C
P
U2
J
P1
D
IM
M
1A
D
IMM
1B
D
IMM
2A
D
IMM
2B
D
IMM
3A
D
IMM
3
B
D
IMM
4A
Batt
e
r
y
Bank2
Bank3
Bank4
KB/MS
USB 0/1
J
5
J14
S
I/O
I
ntel 500
0
J
9
CMOS Clear
JBT1 is used to clear CMOS. Instead of pins, this "jumper" consists of contact
pads to prevent the accidental clearing of CMOS. To clear CMOS, use a metal
object such as a small screwdriver to touch both pads at the same time to short
the connection. Always remove the AC power cord from the system before clearing
CMOS. Note: For an ATX power supply, you must completely shut down the system,
remove the AC power cord and then short JBT1 to clear CMOS.
A
B
A. Clear CMOS
B. Watch Dog Enable
Watch Dog Enable/Disable
Watch Dog is a system monitor that can reboot
the system when a software application hangs.
Close Pins 1-2 to reset the system if an ap-
plication hangs. Close Pins 2-3 to generate a
non-maskable interrupt signal for the application
that hangs. See the table on the right for jumper
settings. Watch Dog must also be enabled in the
BIOS.
Watch Dog
Jumper Settings (JWD)
Jumper Setting Defi nition
Pins 1-2 Reset
(*default)
Pins 2-3 NMI
Open Disabled