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| Serial Interface Pinout | 
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 | RJ45 | DB9 (male) | Signal | 
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 | 1 | 6 | DSR (input) | 
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 | 2 | 1 | DCD (input) | 
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 | 3 | 4 | DTR (output) | 
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 | 4 | 5 | GND | 
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 | 5 | 2 | RxD (input) | 
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 | 6 | 3 | TxD (output) | 
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 | 7 | 8 | CTS (input) | 
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 | 8 | 7 | RTS (output) | 
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 | N/A | 9 | RI (not used) | 
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•The DB9 side is wired as DCE (same as a computer).
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