Chapter 2: Installation
2-21
Watch Dog Enable
JWD controls Watch Dog, a system
monitor that takes action when a
software application freezes the
system. Pins 1-2 will have WD re-
s e t t h e s y s t e m i f a p r o g r a m
freezes. Pins 2-3 will generate a
non-maskable interrupt for the pro-
gram that has frozen (requires soft-
ware implementation). Watch Dog
must also be enabled in BIOS.
Jumper
Position
Pins 1-2
Pins 2-3
Open
Definition
WD to Reset
WD to NMI
Disabled
Watch Dog
Jumper Settings (JWD)
CMOS Clear
JBT1 is used to clear CMOS. In-
stead of pins, this "jumper" consists
of contact pads to prevent the ac-
cidental 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.
Do not use the PW_ON connec-
tor to clear CMOS.
GLAN1
®
JLAN1
S
UPER X6DH8-G
GLAN2
DIMM 2A (Bank 2)
DIMM 2B (Bank 2)
DIMM 3A (Bank 3)
DIMM 3B (Bank 3)
DIMM 4A (Bank 4)
DIMM 4B (Bank 4)
DIMM 1B (Bank 1)
DIMM 1A (Bank 1)
12V 8-pin
PWR
SMBus
PWR
JF1
FP Control
Fan2
JOH1
OH LED
CH Intru
JL1
WD
Enable
IPMI
ID
E
2
F
lo
p
p
y
COM2
BIOS
Ultra 320
SCSI CH A
Ultra 320 SCSI CH B
Fan4
7902
CTRL
SATA0
SATA1
SMB
PCI-X100 MHz
PCI-X 100 MHz (ZCR)
PCI-X 3 133 MHz
Battery
J
P
L
1
RAGE-
X
PCI-E X8
Lindenhurst
North
Bridge
VGA
COM1
USB0/1
KB/
Mouse
Fan6 Fan5
ATX PWR
12V 4-Pin
PWR
Parrallel Port
J 3 8
24-Pin
Fan7
J1D1
J1B1
JP10
J 1 2
Fan8
J 1 5
SCSI
CPU 0
CPU 1
JWOR1
SI/O
J 3 2
JP11
Alrm
Reset
3rd PS
Detect
PSF
Fan1
Fan3
ID
E
1
WOR
JPA1
SCSI Enable
PCI-32 Bit 33 MHz
WOL
USB2/3
J11
ICH
JD2
PW LED SPKR
JPG1
VGA
Enable
JWD
VGA
Slot1
Slot2
Slot3
Slot4
J
P
L
2
Slot5
Slot6
PCI-E X8
GLAN
CTLR
GLAN
CTLR
(Hance
Rapids)
J 6
J 5
inter. SPKR
PXH
JBT1
CL CMOS
J
4
F
5
P
L
L
S
E
L
PS Fail
LED
JFP
Force PW On
J
4
F
4
L
A
N
2
E
n
.
L
A
N
1
E
n
a
b
le
6300 ESB
E7520
WD
Enable
COM2
SATA1
SMB
PCI-X100 MHz
Battery
X
J15
PCI-32 Bit 33 MHz
WOL
USB2/3
J11
ICH
JD2
PW LED SPKR
JPG1
VGA
Enable
JWD
VGA
Slot1
Slot2
inter. SPKR
JBT1
CL CMOS
Clear CMOS
Watch Dog Enable