3-34X8DTU-LN4F+ Motherboard User's Manual
SP1
JF1
JD1
JWF1
JIPMB2
IPMB1
JP8
VGA2
JPK1
JPW1
JBT1
JPW3 JPW2
J3
J2
J1
JPL2
JPG1
JWD
FAN4
FAN5
FAN3
FAN2
FAN1
FAN6
JBT1
D20
LE11
JL1
JI2C1
JI2C2
JPI2C
USB7
USB4/5
USB2/3
Clear
COMS
JTPM
COM2
UIOP
UID LAN4 LAN3 LAN2 LAN1 VGA1 COM1
FAN8/CPU1
FAN7/CPU2
CPU2
P1-DIMM2C
P1-DIMM1C
P1-DIMM3C
JTAG of CPLD
SXB1: PCI-E 2.0 x16
SXB3: PCI-E 2.0 x8
SXB2: PCI-E 2.0 x8+x4
P1-DIMM3B
P1-DIMM3A
P1-DIMM1A
P1-DIMM1B
P1-DIMM2B
P1-DIMM2A
CPU1
USB0/1
IPMI_LAN
P2-DIMM2C
P2-DIMM1C
P2-DIMM3C
P2-DIMM3B
P2-DIMM3A
P2-DIMM1A
P2-DIMM1B
P2-DIMM2B
P2-DIMM2A
JPL1
KB/MS
BIOS
FPCTRL
LE1
SATA0~5
LAN1
LAN2
IOH-36D
ICH10R
Intel
Intel
BMC
Winbond
PHY
USB6
T-SGPIO2
T-SGPIO1
X8DTU-LN4F+
JOH1
WOR1
Rev. 2.0
CMOS Clear
JBT1 is used to clear CMOS. Instead of pi ns, this "jumper " consists of c ontact
pads to prevent the accidental cl earing of CMO S. To clear CMOS, use a met al
object such as a small screwdri ver to touch b oth pads at th e same tim e to shor t
the connection. Always rem ove the AC po wer c ord f rom t he syste m befor e cl ear-
ing 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. Clearing CMOS will also clear any passwords.
A
B
A. Clear CMOS
B. Watch Dog Enable
Watch Dog Enable/Disable
Watch Dog (JWD) is a system monitor that
can reboot the system when a soft ware ap-
plication hangs. Close Pins 1-2 to reset t he
system if an application hangs. Clos e Pins
2-3 to generate a non-maskab le interrupt
signal for the application th at hangs. See the
table on the right for jumper set tings. Watch
Dog must also be enabled in the BI OS.
Watch Dog
Jumper Settings