Pinout of serial 4/5 port

Hi everyone, hope everyone is doing great.

What is the pinout of the serial 4/5 port?

As far as I know, the pinout is (left to right):

  1. VCC
  2. TX
  3. RX
    4. Unknown
    5. Unknown
  4. GND

serial 45

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Thank you dkemxr!!

Could you also send me the link where you got this information in case I need more information?


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