Jetway Computer NF3D - Manual (Page 24)

19
(3) COM4/3/2/1 (9-pin): Serial Port Headers
2
Pin 1
3 4 5
6 7 8 9
Pin NO. RS232 *RS422
(for COM1)
*RS485
(for COM1)
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: RS422, RS485 function is supported by COM1 header only, with compatible
COM cable for RS422 or RS 485 function. User also needs to go to BIOS to set
‘Transmission Mode Select’ for COM1 (refer to Page 31).