Mini-ITX Mainboard Manual
14
JCMOS1: Clear CMOS Header *
Placing the jumper on pin2-3 allows user to restore the BIOS safe setting and
the CMOS data. Please carefully follow the procedures to avoid damaging the
mainboard.
3
1
Pin 1-2 Close:
(Default)
Normal Operation.
1
3
3
1
Pin 2-3 Close:
Clear CMOS data.
Clear CMOS Procedures:
※
1. Remove AC power line.
2. Set the jumper to “Pin 2-3 close”.
3. Wait for five seconds.
4. Set the jumper to “Pin 1-2 close”.
5. Power on the AC.
6. Load Optimal Defaults and save settings in CMOS.
JCOM1A/JCOM1B: Serial Port Connectors
The motherboard has 2 Serial Port Connectors for connecting RS-232 Port.
Pin Assignment
1
Carrier detect (DCD)
2
Received data (RXD)
3
Transmitted data (TXD)
4
Data terminal ready (DTR)
5
Signal ground (GND)
6
Data set ready (DSR)
7
Request to send (RTS)
8
Clear to send (CTS)
JC O M 1 A
JC O M 1 B
9
Ring or 5V
* Do not support RI wake up
