
2-26
X7DCX User's Manual
JPW3
JSMB1
JUSB3
JUSB2
JUSB4
JUSB5
JBT1
JBAT1
JD1
SP1
JPG1
JPL2
JWD1
CPU1
JF1
CH0_DIMM2
CH0_DIMM0
CH1_DIMM0
CH1_DIMM2
CH1_DIMM1
CH0_DIMM1
JPW1
DP1
JI2C2JI2C1
JL1
Fan3
X7DCX
SIMSO
USB7
USB6
USB4/5
I-SA
T
A
5
I-SA
T
A
4
I-SA
T
A
3
I-SA
TA
1
I-SA
TA
2
I-SA
TA
0
CPU1 Fan
CPU2 Fan
Slo3 PCI-Ex8
Slot4 PCI-Ex8
SMBus1
Fan6
Fan1
Fan8
T-SGPIO2
JWOL
Fan7
Fan2
Floppy
IDE
Fan4
USB2/3
PWR I2C
KB/MS
USB0/1
COM1
VGA
LAN1
LAN2
Slot6 PCI-Ex8
Slot5 PCI-Ex8(in x16slot)
Slot7 PCI-Ex4(inx8 slot)
Slot1 PCI 33MHz
JWOR
COM2
Fan5
JPW2
T-SGPIO1
CPU2
BIOS
JPL1
Slo2 PCI-Ex8
LAN
CTRL
LAN
CTRL
DIMM1B
DIMM1A
DIMM2B
DIMM2A
DIMM3B
DIMM3A
Intel
North Bridge
Intel
South Bridge
VGA
CTRL
S I/O
PLX
PCI-Exp.
Switch
IDE
CTRL
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.
B
A. Clear CMOS
B. Watch Dog Enable
Watch Dog Enable/Disable
Watch Dog (JWD1) is a system moni-
tor that can reboot the system when a
software application hangs. Close pins
1-2 to reset the system if an applica-
tion hangs. Close pins 2-3 to generate a
non-maskable interrupt signal for the ap-
plication that hangs. See the table on the
right for jumper settings. Watch Dog must
also be enabled in the BIOS.
Watch Dog
Jumper Settings
Jumper Setting Defi nition
Pins 1-2
Reset
(default)
Pins 2-3
NMI
Open
Disabled
A
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