DB9-dat

- DB9 RS232 RS422 RS485
  1 DCD T- DATA-
  2 RX T+ DATA+
  3 TX R+ NC
  4 DTR R- NC
  5 GND GND GND
  6 DSR RTS- NC
  7 RTS RTS+ NC
  8 CTS CTS+ NC
  9 RI CTS- NC
  10 NC NC NC

sticker DB9 connector

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