Macintosh modem (With DTR) Cable Pinout -
| Mac | Dir | Modem | ||
|---|---|---|---|---|
| HSKo | 1 | OUT | 4+20 | RTS+DTR |
| HSKi | 2 | IN | 5 | CTS |
| TxD- | 3 | OUT | 2 | TxD |
| RxD- | 5 | IN | 3 | RxD |
| GND+RxD+ | 4+8 | - | 7 | GND |
| GPi | 7 | IN | 8 | DCD |
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