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Chapter 2: Hardware installation
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Serial Port Connectors & Headers
JCOM2: Serial Port Header
9
1
10
2
Pin Assignment
Pin Assignment
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
COM2: 5V / 12V / Ring*
10 NA
JCOM3/4/5/6: Serial Port Header
9
1
10
2
Pin Assignment
Pin Assignment
1
DCD
2
SIN
3
SOUT
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
COM3: 5V*
COM4: 12V*
COM5: 5V / 12V / Ring*
COM6: 5V / 12V / Ring*
10 NA
Note
Note1: COM2 voltage selection is controlled by BIOS.
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Note2: COM3/4 voltage selection is controlled by BOM
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Note2: COM5/6 voltage selection is controlled by JPC1/2
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JPC1/JPC2: Pin 9 Switch Headers for COM5/COM6
2 6
1 5
2
1
Pin 1-2 Close: Pin9=5V
4
3
Pin 3-4 Close: Pin9= RING (Default)
6
5
Pin 5-6 Close: Pin9=12V