14
(3) LAN_LED (8-pin): LAN Activity LED Header Pitch=2.0mm
L
AN
1
L
E
D+
L
AN
3
L
E
D+
L
AN
1
L
E
D
-
L
AN
4
L
E
D
-
L
AN
2
L
E
D
-
L
AN
2
L
E
D+
L
AN
4
L
E
D+
L
AN
3
L
E
D
-
Pin 1
2
(4) COM2 (9-pin): RS232/422/485 Serial Port Header Pitch=2.0mm
2
Pin 1
3 4 5
6 7 8 9
COM2
Pin NO. RS232
RS422
RS485
Pin 1
DCD
TX-
DATA-
Pin 2
RXD
TX+
DATA+
Pin 3
TXD
RX+
NC
Pin 4
DTR
RX-
NC
Pin 5
GND
GND
GND
Pin 6
DSR
NC
NC
Pin 7
RTS
NC
NC
Pin 8
CTS
NC
NC
Pin 9
RI
NC
NC
*Notice:
COM2 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 COM2 as [RS422] or [RS485] for boards that
LAN_LED
