25 pin D-SUB MALE connector at the computer |
Pin |
Name |
Dir |
Description |
1 |
SNG |
|
Shield ground |
2 |
TXD |
|
Tx Transmit Data, Out |
3 |
RCD |
|
Rx Receive Data, In |
4 |
RTS |
|
Request to Send, Out |
5 |
CTS |
|
Clear to Send, In |
6 |
DSR |
|
Data Set Ready, In |
7 |
GND |
|
Ground |
8 |
DCD |
|
Data Carrier Detect, In |
9 |
n/c |
|
No connection |
10 |
n/c |
|
No connection |
11 |
n/c |
|
No connection |
12 |
CH |
|
Data signal rate selector, In |
13 |
n/c |
|
No connection |
14 |
n/c |
|
No connection |
15 |
n/c |
|
No connection |
16 |
n/c |
|
No connection |
17 |
n/c |
|
No connection |
18 |
n/c |
|
No connection |
19 |
n/c |
|
No connection |
20 |
DTR |
Terminal Ready Signal, Out |
21 |
n/c |
|
No connection |
22 |
CE |
|
Ring indicator, In |
23 |
n/c |
|
No connection |
24 |
n/c |
|
No connection |
25 |
n/c |
|
No connection |
| |