Hardware Installation
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18) COMA (Serial Port Header, White)
The COMA header can provide one serial port via an optional COM port cable. For purchasing the op-
tional COM port cable, please contact the local dealer.
10
9
2
1
Pin No. Definition
1
NDCD-
2
NSIN
3
NSOUT
4
NDTR-
5
GND
6
NDSR-
7
NRTS-
8
NCTS-
9
NRI-
10
No Pin
19) CLR_CMOS (Clearing CMOS Jumper)
Use this jumper to clear the CMOS values (e.g. date information and BIOS configurations) and reset
the CMOS values to factory defaults. To clear the CMOS values, place a jumper cap on the two pins to
temporarily short the two pins or use a metal object like a screwdriver to touch the two pins for a few
seconds.
Open: Normal
Short: Clear CMOS Values
•
Always turn off your computer and unplug the power cord from
the power outlet before clearing the CMOS values.
•
After clearing the CMOS values and before turning on your
computer, be sure to remove the jumper cap from the jumper.
Failure to do so may cause damage to the motherboard.
•
After system restart, go to BIOS Setup to
load factory defaults (select
Load Optimized Defaults
) or
manually configure the BIOS settings (refer to Chapter 2, "BIOS
Setup,"
for BIOS configurations).
Summary of Contents for GA-P55-UD3
Page 2: ...Motherboard GA P55 UD3 Jul 20 2009 Jul 20 2009 Motherboard GA P55 UD3...
Page 32: ...Hardware Installation 32...
Page 117: ...117 Appendix...
Page 118: ...Appendix 118...
