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Interface Definition
1-JBAT (Clear CMOS jumper) :
If (a) the CMOS data is damaged, (b) you forget the administrator or user password in the BIOS menu,
(c) Unable to boot due to incorrect CPU frequency setting in the BIOS menu, (d) When the CPU or
memory module has changed, it is time to clear the CMOS settings. This header uses a jumper cap to
clear the CMOS settings and reset the BIOS to default values.
- Pin 1 and 2 open circuit (Default value): Normal state
- Pin 1 and 2 shorted: Clear CMOS settings
Clear CMOS setting and load default:
1. Turn off the system power.
2. Short-circuit pin 1 and pin 2 and wait for a few seconds.
3. Turn on the system power.
4. If the BIOS CPU frequency setting is incorrect, please press the <Del> key immediately
after rebooting to enter the BIOS setting menu.
5. Set the CPU speed back to default or to an appropriate value.
6. Save and leave the BIOS setup menu.
2/3 SPEAKER / FPANEL (PC speaker pin / front control panel connector pin):
The power button on the front panel of the computer case, the system restart button, the speaker, the
system indicator light, etc. can be connected to this pin. Please refer to the following definitions and
pay attention to the positive and negative (+/-) poles of the pins when connecting.
Pin
Pin Definition
SPK +
1
2
NC
3
NC
4
SPK -
PWR_LEDP
WR_ON
+
-
+
-
HDD_LED
RESET
Pin
Pin Definition
Clear CMOS
1-2
PWR-LED (Power LED) - Connect to the power
LED wire.
PWR-ON (Power button) - Connect to the
power button wire.
HDD_LED (Hard disk indicator) - Connect to
the hard disk indicator cable.
RESET (Reset button) - Connect to the restart
button cable.
SPEAK (PC speaker port) - Connect to the system
speaker cable.
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