Connector - AppleLine RS23225 PIN D-SUB MALE at the computer. | (at the computer) |
| Pin | Name | Direction | Description |
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| 1 | SNG | --- | Shield ground | | 2 | TXD | Output | Tx Transmit Data, Out | | 3 | RCD | Input | Rx Receive Data, In | | 4 | RTS | Output | Request to Send, Out | | 5 | CTS | Input | Clear to Send, In | | 6 | DSR | Input | Data Set Ready, In | | 7 | GND | --- | Ground | | 8 | DCD | Input | Data Carrier Detect, In | | 9 | n/c | --- | No connection | | 10 | n/c | --- | No connection | | 11 | n/c | --- | No connection | | 12 | CH | Input | Data signal rate selector, In | | 13 | n/c | --- | No connection | | 14 | n/c | --- | No connection | | 15 | n/c | --- | No connection | | 16 | n/c | --- | No connection | | 17 | n/c | --- | No connection | | 18 | n/c | --- | No connection | | 19 | n/c | --- | No connection | | 20 | DTR | Input | | | 21 | n/c | --- | No connection | | 22 | CE | Input | Ring indicator, In | | 23 | n/c | --- | No connection | | 24 | n/c | --- | No connection | | 25 | n/c | --- | No connection |
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