Распиновка, расположение выводов и внешний вид последовательного интерфейса:
Apple LaserWriter Serial
25 PIN D-SUB CONNECTOR
PinNameDirDescription
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.
Contributor:
Joakim Цgren
Source:
Technote HW19: Pinouts developer.apple.com/technotes/hw/hw_19.html at Apple Technical Notes
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May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2002-01-10