AAEON AEC-6876 - Manual (Page 21)

E m b e d d e d C o n t r o l l e r A E C - 6 8 7 6
Chapter 2 Hardware Installation 2 - 5
RS-485 Mode
Pin Signal Pin Signal
1 D- 2 NC
3 D+ 4 NC
5 Ground 6 NC
7 NC 8 NC
9 NC
2.4 RS-232 Box Header (COM3~COM6)
4B
Pin
25B
Signal Pin
5B
Signal
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI
2.5 USB Box Header (USB3~USB4)
4B
Pin
25B
Signal Pin
5B
Signal
1 +5V 2 GND
3 USBD- 4 GND
5 USBD+ 6 USBD+
7 GND 8 USBD-
9 GND 10 +5V