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(10) Serial COM Port header: COM1
COM1 is the 9-pin block pin-header.
Serial COM Port 9-pin Block
Pin1
3-3 Jumper Setting
(1) Keyboard/USB function Enabled/Disabled: JP1
Keyboard/Mouse & USB Power On Setting
2-3 Closed KB/USB Power ON Enabled
JP1
JP1
1-2 Closed KB/USB Power ON Disable (Default)
(2) CMOS RAM Clear (3-pin): JBAT
A battery must be used to retain the motherboard configuration in CMOS RAM
short 1-2 pins of JBAT to store the CMOS data.
To clear the CMOS, follow the procedure below:
1. Turn off the system and unplug the AC power
2. Remove ATX power cable from ATX power connector
3. Locate JBAT and short pins 2-3 for a few seconds
4. Return JBAT to its normal setting by shorting pins 1-2
5. Connect ATX power cable back to ATX power connector
Note: When should clear CMOS
1. Troubleshooting
2. Forget password
3. After over clocking system boot fail
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