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Connector pinout: Macintosh Serial
Macintosh Serial
9 PIN D-SUB FEMALE at the computer.
| pin | name | direction | description | color | | 1 | Gnd | | Ground | | | 2 | +5V | Out | +5 VDC. Don't use this one, it may be converted into output handshake in later equipment. | | | 3 | Gnd | | Ground | | | 4 | TX+ | Out | Transmit Data, positive going component | | | 5 | Tx- | Out | Transmit Data, negative going component | | | 6 | +12V | Out | +12 VDC | | | 7 | DSR/HSK | IN | Handshake input. Signal name depends on mode: Used for Flow Control or Clock | | | 8 | Rx+ | IN | Receive Data, positive going component | | | 9 | Rx- | IN | Receive Data, negative going component | |
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