Aaeon EMB-B75A - Page 30

EMB-B75A
2-22
8. Serial port connectors (10-1 pin COM1, COM2)
Theseconnectorsareforserial(COM)ports.Connecttheserialportmodule
cabletothisconnector,theninstallthemoduletoaslotopeningattheback
of the system chassis.
EMB-B75A Serial port connectors
PIN 1
COM2
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
PIN 1
COM1
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
NOTES:
• TheCOMmoduleispurchasedseparately.
• COM1alsosupportsRS-232/RS-422/RS-485.Seethetablebelowand
section 3.3.7 Super IO Configuration for details.
Pin Signal Pin Signal
1 DCD(422TXD-/485DATA-) 2 RXD(422RXD+)
3 TXD(422TXD+/485DATA+) 4 DTR(422RXD-)
5 GND 6 DSR
7 RTS 8 CTS
9 RI/+12V/+5V 10 N.C.