


Apple Macintosh XL Serial B
25 PIN D-SUB CONNECTOR
| Pin |
Name |
Description |
| 1 |
GND |
Ground |
| 2 |
TxD- |
Transmit Data line |
| 3 |
RxD- |
Receive Data line |
| 4 |
n/c |
Not connected |
| 5 |
n/c |
Not connected |
| 6 |
HSK/DSR |
TRxCB or CTSB |
| 7 |
GND |
Ground |
| 8 |
n/c |
Not connected |
| 9 |
n/c |
Not connected |
| 10 |
n/c |
Not connected |
| 11 |
n/c |
Not connected |
| 12 |
n/c |
Not connected |
| 13 |
n/c |
Not connected |
| 14 |
n/c |
Not connected |
| 15 |
n/c |
Not connected |
| 16 |
n/c |
Not connected |
| 17 |
n/c |
Not connected |
| 18 |
n/c |
Not connected |
| 19 |
RxD+ |
Receive Data line |
| 20 |
TxD+/DTR |
Connected to DTRB |
| 21 |
n/c |
Not connected |
| 22 |
n/c |
Not connected |
| 23 |
n/c |
Not connected |
| 24 |
n/c |
Not connected |
| 25 |
n/c |
Not connected |
Copyright © The Hardware Book Team 1996-2004.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2002-01-10