Clear Cmos Procedures - Biostar H77MU3 Setup Manual

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
motherboard.

※ 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. Reset your desired password or clear the CMOS data.
J_COM1: Serial Port Connector
The motherboard has a Serial Port Connector for connecting RS-232 Port.
1
Pin 1-2 Close:
Normal Operation
(default).
1
Pin 2-3 Close:
Clear CMOS data.
1 3
Pin Assignment
1 Carrier detect
2 Received data
3 Transmitted data
4 Data terminal ready
5 Signal ground
6 Data set ready
7 Request to send
2 1 0
8 Clear to send
9 Ring indicator
10 NC
1 9
H7 7 M U 3
3
3
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