Hardware Installation
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English
22) COM (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing the
optional COM port cable, please contact the local dealer.
Pin No.
Definition
1
NDCD -
2
NSIN
3
NSOUT
4
NDTR -
5
GND
6
NDSR -
7
NRTS -
8
NCTS -
9
NRI -
10
No Pin
10
9
2
1
23) BAT (BATTERY)
The battery provides power to keep the values (such as BIOS configurations, date, and time
information) in the CMOS when the computer is turned off. Replace the battery when the battery
voltage drops to a low level, or the CMOS values may not be accurate or may be lost.
•
Always turn off your computer and unplug the power cord before replacing the battery.
•
Replace the battery with an equivalent one. Danger of explosion if the battery is replaced
with an incorrect model.
•
Contact the place of purchase or local dealer if you are not able to replace the battery by
yourself or uncertain about the battery model.
•
When installing the battery, note the orientation of the positive side (+) and the negative
side (-) of the battery (the positive side should face up).
•
Used batteries must be handled in accordance with local environmental regulations.
You may clear the CMOS values by removing the battery:
1. Turn off your computer and unplug the power cord.
2. Gently remove the battery from the battery holder and wait for one minute.
(Or use a metal object like a screwdriver to touch the positive and
negative terminals of the battery holder, making them short for 5 seconds.)
3. Replace the battery.
4. Plug in the power cord and restart your computer.
