Jumper - MSI 915 User Manual

2.8 Jumper

The motherboard provides the following jumpers for you to set the
computer's function. This section will explain how to change your
motherboard's function through the use of jumpers.
BIOS Flash Jumper: BIOS_WP
This jumper is used to lock or unlock the boot block area on BIOS.
When unlocked, the BIOS boot block area can be updated. When locked,
the BIOS boot block area cannot be updated.
BIOS_WP
Clear CMOS Jumper: CLR_CMOS
There is a CMOS RAM on board that has a power supply from
external battery to keep the system configuration data. With the CMOS
RAM, the system can automatically boot OS every time it is turned on. If
you want to clear the system configuration, use the CLR_CMOS (Clear
CMOS Jumper ) to clear data. Follow the instructions below to clear the
data:
1
CLR_CMOS
MSI Reminds You...
You can clear CMOS by shorting 2-3 pin while the system is off.
Then return to 1-2 pin position. Avoid clearing the CMOS while
the system is on; it will damage the mainboard.
With Jumper
BIOS Flash Locked
Jumper
1
3
Keep Data
2-21
Introducing Mainboard
No Jumper
BIOS Flash Unlocked
Jumper
1
3
Clear Data