| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | GND |
|
Ground |
| 2 | SD |
|
Send Data |
| 3 | RD |
|
Receive Data |
| 4 | RTS |
|
Request To Send |
| 7 | GND |
|
Ground |
| 14 | FAULT- |
|
False when deselected |
| 20 | DTR |
|
Data Terminal Ready |
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