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12. Clear CMOS header
The Clear CMOS header allows you to clear the Real Time Clock (RTC) RAM in
the CMOS, which contains the date, time, system passwords, and system setup
parameters.
CLRTC
To erase the RTC RAM:
1.
Turn OFF the computer and unplug the power cord.
2.
Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds.
3.
Plug the power cord and turn ON the computer.
4.
Hold down the <Del> key during the boot process and enter BIOS setup to re-
enter data.
CAUTION! DO NOT short-circuit the pins except when clearing the RTC RAM. Short-circuiting or
placing a jumper cap will cause system boot failure!
13. COM Port header
The COM (Serial) Port header allows you to connect a COM port module. Connect the
COM port module cable to this header, then install the module to a slot opening on the
system chassis.
COM1
COM2
14. COM Debug header
This header allows connection to a COM Debug card.
NOTE: The COM Debug Card is purchased separately.
PIN 1
SOUTC_P80
GND
GND
O_COM1_TXD1
+3V
COM_DEBUG
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