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8) COMA/COMB (Serial Port Headers)
Each 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.
1
9
2
10
9) 2W_SPKR (Speaker Header)
This speaker header is connected to a L/R audio pins from the board to support the 3W (4ohm) stereo
speaker on your AIO chassis.
1
4
10) SPEAKER (Buzzer Header)
Connects to the buzzer on the chassis front panel. The system reports system startup status by issuing a
beep code. One single short beep will be heard if no problem is detected at system startup.
1
Pin No. Definition
Pin No. Definition
1
NDCD-
2
NDSR-
3
NSIN
4
NRTS-
5
NSOUT
Pin No. Definition
1
Speaker OUT R-
2
Speaker OUT R+
3
Speaker OUT L-
4
Speaker OUT L+
Pin No. Definition
1
VCC
2
NC
3
NC
4
SPK-
- 14 -
6
NCTS-
7
NDTR-
8
12V_5V
9
GND
10
NC
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