Pinouts >  RS-232 and other serial ports and interfaces  >  Apple pinouts
This connector is present on Macintosh 128K, 512K, and 512K enhanced.
Pin Name Dir Description
1 GND --- Ground
2 +5V --> +5 VDC. Dont use this one, it may be converted into output handshake in later equipment.
3 GND --- Ground
4 Tx+ --> Transmit Data, positive going component
5 Tx- --> Transmit Data, negative going component
6 +12V --> +12 VDC
7 DSR/HSK <-- Handshake input. Signal name depends on mode: Used for Flow Control or Clock In.
8 Rx+ <-- Receive Data, positive going component
9 Rx- <-- Receive Data, negative going component

a. When connecting to an RS-232 device, use HSKi with data set ready (DSR) or other handshaking signals, depending on the device to be connected.

9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the computer
9 pin D-SUB male connector layout
9 pin D-SUB male connector
at the mouse cable
There are no any reports for this pinout! You may rate this document by clicking the button below.

Is this pinout
Source(s) of this and additional information: Apple Tech Info Library, Article ID: TECHINFO-0001424; Ben Harris
This page contain parts under Copyright © 2000-2019 by team.
No portion of this webpage may be reproduced in any form without providing visible HTML link to . Webmaster permission required in any other cases.
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.