Chapter 2: Installation
2-33
PCH
J4
66
160
65
159
63
USB1
VGA1
JF1
JPW2
COM1
LAN2
JSD1
JIPMB1
S-SA
TA1
I-SATA3
I-SA
TA4
I-SA
TA2
JTPM1
J2
J1
FANA
FAN1
FAN2
FAN3
J21
LE1
LE3
LED1
LEM1
JITP0
JNMI1
JI2C1
JP7
JWD1
JPBR1
JPG1
JPB1
P1-DIMMB2
P2-DIMMH2
P1-DIMMB1
P1-DIMMA2
P2-DIMMH1
P2-DIMME1
CPU1
P1-DIMMC1
P2-DIMMG2
P1-DIMMA1
AL
W
AYS POPULA
TE DIMMx1 FIRST
P1-DIMMC2
P2-DIMME2
P2-DIMMG1
P2-DIMMF1
P1-DIMMD1
P1-DIMMD2
P2-DIMMF2
JBAT1
JPL1
JI2C2
LAN1
CPU2
BIOS
BMC
LAN
CTRL
IPMI
_LAN
X9DRFR
Rev. 2.00
USB2
JP6
I-SA
TA5
S-SA
TA0
T-SGPIO1 T-SGPIO2
JBR1
JPME1
JPME2
JBT1
S-SATA2
S-SATA3
I-SA
TA1
I-SA
TA0
JSD2
BAR CODE
MAC CODE
IPMI CODE
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 sys-
tem, 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.
A
B
A. Clear CMOS
B. Watch Dog Enable
Watch Dog Enable/Disable
Watch Dog (JWD1) is a system monitor that
will reboot the system when a software ap-
plication hangs. Close Pins 1-2 to reset the
system 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.
Watch Dog
Jumper Settings
Jumper Setting Definition
Pins 1-2
Reset (default)
Pins 2-3
NMI
Open
Disabled
