Jumpers
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.
Clear CMOS Jumper: JBAT1
There is a CMOS RAM on board that has a power supply from external battery to keep the data of system configuration. With the CMOS RAM, the system can auto- matically boot OS every time it is turned on. If you want to clear the system configuration, se the JBAT1 (Clear CMOS Jumper ) to clear data. Follow the instructions below to clear the data:
3 | 1 | 3 | 1 | 3 | 1 |
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JBAT1
Clear Data | Keep Data |
MSI Reminds You...
You can clear CMOS by shorting
CPU Frequency Jumpers: SW1 & SW2
These two jumpers provide 100MHz, 133MHz, 166MHz, and 200MHz Front Side Bus frequency selection for overclocking purpose.
3 
1
SW1 & SW2
FSB = 100MHz | 3 | 1 | 3 | 1 |
SW1 |
| SW2 |
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FSB = 133MHz | 3 | 1 | 3 | 1 |
| SW1 |
| SW2 |
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FSB = 166MHz | 3 | 1 | 3 | 1 |
| SW1 |
| SW2 |
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FSB = 200MHz | 3 | 1 | 3 | 1 |
(for KM4AM only) | SW1 |
| SW2 |
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