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A1SAi & A1SRi Series Motherboard User's Manual
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 connec-
tion. 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.
PCI-E Slot SMB Enable (I
Use Jumpers I
2
SMB (System Management Bus) support
to improve system management for the
onboard PCI-E slot. See the table on the
right for jumper settings.
JUIDB1
VGA
BMC
LAN2/LAN4
B
JI2C1
A1SAi/A1SRi Series Motherboard
Rev. 1.00
JI2C2
C
Battery
JWD1
JF1
1
J3
SP1
C1/I
C2)
2
2
C1/I
C2 to enable PCI
2
USB2.0-0/1
USB3.0-0/1
IPMI_LAN
LAN1/LAN3
Marvell
PHY
BIOS
A
JBT1
CPU
Jumper Setting
Short
Open (Default)
COM1
FAN3
FAN1
2-26
PCI Slot_SMB Enable
Jumper Settings
Definition
Enabled
Disabled
A. Clear CMOS
B. JI
C1
2
C. JI
C2
2
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