A Null Modem Cable with Full Handshake is incompatible with the previous types of cables hardware flow control, due to a crossing of its RTS/CTS pins. With suitable software, the cable is capable of much higher speeds than its predecessors. It also supports software flow control. This cable is used for connecting two DTE devices together.
| DB9 (Female) Pin | DB9 (Female) Name | DB9 (Female) Pin |
|---|---|---|
| 1 | DCD | 4 |
| 2 | RXD (RD) | 3 |
| 3 | TXD (TD) | 2 |
| 4 | DTR | 1 |
| 4 | DTR | 6 |
| 5 | GND | 5 |
| 6 | DSR | 4 |
| 7 | RTS | 8 |
| 8 | CTS | 7 |
