MSI MS-S1311, User Manual

Page: 37 / 68

2-21
Hardware Setup MS-S1311
Jumper
Clear CMOS Jumper: JBAT1
There is a CMOS RAM onboard that has a power supply from an external battery
to keep the data of system configuration. With the CMOS RAM, the system can
automatically boot OS every time it is turned on. If you want to clear the system
configuration, set the jumper to clear data.
Normal
(Default)
Clear CMOS
1 1
Important
You can clear CMOS by shorting pins 2 and 3 while the system is off. Then return
to 1-2 pin position. Avoid clearing the CMOS while the system is on; it will dam-
age the motherboard.
Flash Security Override Jumper: JSDO1
This jumper is used to enable/disable the BIOS flash. When you intend to update
the BIOS code, enable the BIOS flash by shorting pins 2 and 3. Under normal
operation, we suggest that you disable the BIOS flash to protect the system BIOS
from virus infection.
Enable Security
(Default)
Disable Security
(Override)
1 1
BIOS Recovery Jumper: JBIOS_RECOVERY1
Users can short pins 2 and 3 to recover the system BIOS. When the system is
done with the job, the buzzer will beep to remind the user to set the jumper to its
normal state (pins 1 and 2 shorted).
Normal
(Default)
BIOS
Recovery
1 1