Apple Macintosh Serial 9 pin Connector Pinout
From AllPinouts
Connector pinout for: Apple Macintosh Serial 9 pin
Available on Macintosh Mac 512KE and earlier.
9 PIN D-SUB MALE at the mouse cable.
9 PIN D-SUB FEMALE at the computer.
| Pin | Name | Dir | Description |
|---|---|---|---|
| 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 In. |
| 8 | Rx+ | IN | Receive Data, positive going component |
| 9 | Rx- | IN | Receive Data, negative going component |
Notes
- Direction is Computer relative Equipment.
References
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