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(8) COM5/COM6 (9-pin): RS232(/422/485) Serial Port Header
COM5 is optional to support RS232/422/485 function.
COM6 only supports RS232 function.
*Notice: COM5 servers as RS232 serial port header in most cases.RS422 &
RS485 function is only optional to customized models. User also needs to go to BIOS
to set 'Transmission Mode Select' for COM5 as [RS422] or [RS485] (only supported
by customized BIOS version )for boards that support RS422/485 function before
connecting compatible COM cable to COM5 header.
Pin NO. RS232
Pin 1
DCD
Pin 2
DSR
Pin 3
RXD
Pin 4
RTS
Pin 5
TXD
Pin 6
CTS
Pin 7
DTR
Pin 8
RI
Pin 9
GND
22
*RS422
*RS485
(COM5)
(COM5)
TX-
DATA-
NC
NC
TX+
DATA+
NC
NC
RX+
NC
NC
NC
RX-
NC
NC
NC
GND
GND
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