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Mainboard PM945GC(V2.0)
14
Clear CMOS Jumper: JBAT
The “Clear CMOS” function is used when you are unable boot your system and need to reset the BIOS
settings (CMOS settings) back to the manufacturer’s original settings. This is also a way to reset the
system password if you have forgotten it.
JBAT Assignment
Pin 1-2 Closed
Normal (Default)
Pin 2-3 Closed
Clear CMOS Data
Note: Close stands for putting a jumper cap onto two header pins.
1. Turn off your system and disconnect the AC power cable.
2. Set JBAT header to OFF (2-3 Closed).
3. Wait several seconds.
4. Set JBAT header to ON (1-2 closed).
5. Connect the AC power cable and turn on your system.
6. Reset your new password.
Audio Configuration
CD-ROM Audio-In Connector: CDIN
The CD-IN connector is used to attach an audio cable to audio devices such as CD-ROMs, DVD-ROMs etc.
HDMI-SPDIF out Header: HDMI_SPDIF (Optional)
The SPDIF output is capable of providing digital audio to external speakers or compressed AC3 data to an
external Dolby digital decoder. Use the feature only when your stereo system has digital input function.
HDMI_SPDIF
Pin Assignment Pin Assignment
1
HDMI_SPDIF_OUT
2
GND
The following steps explain how to reset your CMOS configurations
when you forgot a system password.