KX18D Series
17
Front Serial Port Header: COM2
This mainboard supports a front serial header. To use this header, you can install a back panel bracket
(optional) with a wire extending to this header. You can then attach your serial device to the serial
port on the bracket.
OTP (Over Temperature Protection) Jumper: JP4
The mainboard supports a special design for CPU Over Temperature Protection. If this function is
“Enabled” and the CPU temperature rises above the normal range, the system will automatically shut
down and you have to unplug the ATX_PWR connector. Remove and reinstall the CPU heat sink
also check to make sure the CPU fan is working properly.
*OTP is only functional when using an Athlon XP
TM
or Barton
TM
CPU.
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COM2
1
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SIN-
DCD-
SOUT
Ground
RINGW
RTS-
DTR-
DS6-
CTS-
NC
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JP4
JP4
1
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3
3
Pin1-2 short
Pin2-3 short
Disable (default)
Enable
(Short means to cover two pins on
a jumper using a jumper cap.)
1
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