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CMOS Clear
JBT1 is used to clear CMOS. Instead of pins, this "jumper" consists of contact pads
to prevent 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 1: For an ATX power supply, you must completely shut down the
system, remove the AC power cord, and then short JBT1 to clear CMOS.
Note 2: Be sure to remove the onboard CMOS Battery before you short
JBT1 to clear CMOS.
Note 3: Clearing CMOS will also clear all passwords.
Watch Dog Enable/Disable
Watch Dog (JWD1) is a system monitor that
can reboot the system when a software appli-
cation hangs. Close Pins 1-2 to reset the sys-
tem if an application 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.
LED1
BMC
CTRL
JI2C1
1
JI2C2
1
1
1
B
2
3
4
1
JPG1
Battery
XDP_PCH
I-SATA5
I-SATA4
I-SATA3
Intel IOH
I-SATA2
I-SATA1
BIOS
I-SATA0
A
JBT1
JL1
SAS4~7
SAS0~3
JF1
LED3
VGA
COM1
JPL1
LAN2
LAN1
LAN
CTRL
82580
XDP_CPU
X9DBU
Rev. 1.02
BUZZER
FAN3
JD1
2-33
Chapter 2: Installation
Watch Dog
Jumper Settings
Jumper Setting
Defi nition
Pins 1-2
Reset (default)
Pins 2-3
NMI
Open
Disabled
A. Clear CMOS
USB0/1
B. Watch Dog Enable
KB/MOUSE
JPW4
IPMI_LAN
PHY
JPW3
JPW2
JPW1
FAN2
FAN1
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