Jetway Computer NF76 - Manual (Page 16)

（9）TX-RXCOM1：RS422/485 header
11
Pin definition when RS422 selected
Pin No. Pin Definition Pin No. Pin Definition
1 TXDP 2 TXDN
3 RXDP 4 RXDN
Pin definition when RS485 selected
Pin No. Pin Definition Pin No. Pin Definition
1 DATAP 2 DATAN
RS422/485 header
TX-RXCOM1
1 2