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Serial Port Header: COM2
This mainboard supports a front serial port header. To use this header, you can install a COM port
bracket (optional) with a COM port wire extending to this header. You can then attach your serial
device to the serial port on the bracket.
DCD-
SOUT
Ground
RTS-
RINGW
Clear CMOS Jumper: JP1
The "Clear CMOS" jumper is used when you cannot boot your system due to some CMOS
configuration problem such as a forgotten password. This jumper allows you to reset the CMOS
configurations, and then reconfigure.
Pin1-2 short
Normal (default)
Pin2-3 short
Clear CMOS data
(Short means to cover two pins on
a jumper using a jumper cap.)
The following procedures are for resetting the BIOS password. It is
important to follow these instructions closely.
1.
Turn off your system and disconnect the AC power cable.
2.
Set JP1 to OFF (2-3 Closed).
3.
Wait several seconds.
4.
Set JP1 to ON (1-2 closed).
5.
Connect the AC power cable and turn on your system.
6.
Reset your desired password.
1
2
SIN-
DTR-
DSR-
CTS-
NC
9
10
COM2
3
2
1
JP1
3
2
1
JP1
17
PM266A PRO/ PM266A
DIM M1
DIM M2
DIM M1
DIM M2
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