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13) COMA/COMBk (Serial Port Headers)
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.
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
14) SPEAKER (Speaker Header)
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. This header can also provide audio output in the operating system.
Pin No.
Definition
1
SPK+
2
SPK-
1
k Only for H610I DDR4.
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