Com Wafer Connectors (Com1~Com4) - AXIOMTEK CAPA322 User Manual

2.4.15

COM Wafer Connectors (COM1~COM4)

These are 9-pin (pitch=1.25mm) connectors, compliant with Molex 53047-0910. Use
the matching cable 59380880250E is strongly recommended.
- COM1 and COM2 support RS-232/422/485 by BIOS selecting (see section 4.4).
- COM3 and COM4 support RS-232 only
For COM1 and COM2:
Pin RS-232
1 DCD
2 DSR
3 RXD
4 RTS
5 TXD
6 CTS
7 DTR
8 RI
9 GND
For COM3 and COM4:
Pin Signal
1 DCD
3 RXD
5 TXD
7 DTR
9 GND
Board and Pin Assignments
RS-422 RS-485
TX- Data-
No use No use
TX+ Data+
No use No use
RX+ No use
No use No use
RX- No use
No use No use
No use No use
Pin Signal
2 DSR
4 RTS
6 CTS
8 RI
CAPA322 3.5" Board
1
9
1
9
17