Apple LaserWriter Serial

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connector wiring scheme

25 pin D-SUB female connector layout 25 pin D-SUB female connector

25 pin D-SUB male connector diagram 25 pin D-SUB male connector

Pin Name Dir Description
1 GND - Ground
2 TXD- OUT Transmit Data
3 RXD- IN Receive Data
4 RTS OUT Request To Send
5 CTS IN Clear To Send
6 DSR IN Data Set Ready
7 GND - Ground
8 DCD OUT Data Carrier Detect
20 DTR- OUT Data Terminal Ready
22 RING IN ?

Notes

  • Direction is Printer relative Computer.

References

Category:Computer Peripheral Connectors

 

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