NIC2
NIC1
ON
PWR
X
RST
OH/
FF
LED
LED
HDD
X
PWR
NMI
C226
X540
X540
X540
BMC
PLX
CMOS Clear (JBT1)
JBT1 is used to clear the saved system setup conguration stored in the CMOS chip.
To clear the contents of the CMOS, completely shut down the system, remove the
AC power cord and then short JBT1 with a jumper. This will erase all user settings
and revert everything to their factory-set defaults.
A. Clear CMOS
B. JI
2
C1
C. JI
2
C2
PCI Slot_SMB Enable
Jumper Settings
Jumper Setting Denition
1-2 Enabled
2-3 Disabled
PCI Slot SMB Enable (JI
2
C1/JI
2
C2)
Use jumpers JI
2
C1/JI
2
C2 to enable PCI
SMB (System Management Bus) support
to improve system management for the
PCI slots. See the table on the right for
jumper settings.
C
A
B