Mainboard KX550
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.
The following steps explain how to reset your CMOS
configurations when you forgot a system password.
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.
Front Panel Audio Header: AUDIO
If your case front panel has audio ports, you can connect them to the Front Audio Header of this
mainboard. Therefore, you can use both the front audio panel and back panel audio
simultaneously.
AUDIO
Pin
Assignment
Pin
Assignment
1
AUD_MIC
2
AUD_GND
3
AUD MIC BIAS
4
AUD_VCC
5
AUD_FPOUT_R
6
AUD_RET_R
7
HP_ON
8
N/A
9
AUD_FPOUT_L
10
AUD_RET_L
16
