Chapter 2: Installation
2-29
A
1
USB2/3
C
O
M2
USB7
USB5/6
USB4
JBT1
Slot 4 PCI 33MHz
Slot 5 PCI-E x4 in x8
Speaker
Slot 6 PCI 33MHz
ID
E
I-S
A
T
A
0
I-S
A
T
A
1
Slot 7 PCI-E x16
I-S
A
T
A
3
I-S
A
T
A
2
L
A
N
2
L
A
N
1
VG
A
C
O
M1
UNB NON-ECC DDR2 400/533/667 Required
DIMM1A
DIMM1B
U
SB0
/1
/C
PU
Fan
JPW1
JPW2
KB/
MO
USE
Intel 945GC
Intel ICH7R
Battery
BIOS
Super IO
LAN
CTRL
LAN
CTRL
VRM
CTRL
Intel
CPU
LE1
JF1
FP
CTRL
JD
1
Fan1
PWR LED
/SPKR
JO
H
1
Fan2
JWD
Fan3
JL1
Fan4
JPL1
JPL2
Fan5
JP3
Clock chip
X7SLM-L
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:
For an ATX power supply, you must completely shut down the system, remove
the AC power cord and then short JBT1 to clear CMOS.
A
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 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 (JWD)
Jumper Setting Defi nition
Pins 1-2
Reset
(default)
Pins 2-3
NMI
Open
Disabled
B
