Apple LaserWriter Serial
From HwB
[edit] Pinout
25 PIN D-SUB CONNECTOR
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | GND |  | Ground |
| 2 | TXD- |  | Transmit Data |
| 3 | RXD- |  | Receive Data |
| 4 | RTS | | Request To Send |
| 5 | CTS | | Clear To Send |
| 6 | DSR | | Data Set Ready |
| 7 | GND | | Ground |
| 8 | DCD | | Data Carrier Detect |
| 20 | DTR- | | Data Terminal Ready |
| 22 | RING | | ? |
Note: Direction is Printer relative Computer.