Esse cabo deve ser usado para DTE to DCE (conectar computador e modem) conecções com hardware handshaking.
(Para computador) 
(Para Modem).
9 PIN D-SUB FEMALE to the Computer
25 PIN D-SUB Macho para o modem
| Female | Male | Dir | |
|---|---|---|---|
| Shield | 1 |  | |
| Transmit Data | 3 | 2 |  |
| Receive Data | 2 | 3 |  |
| Request to Send | 7 | 4 | |
| Clear to Send | 8 | 5 | |
| Data Set Ready | 6 | 6 | |
| System Ground | 5 | 7 | |
| Carrier Detect | 1 | 8 | |
| Data Terminal Ready | 4 | 20 | |
| Ring Indicator | 9 | 22 | |