Pin Number |
Pin Name |
Description |
---|---|---|
1 | NA |
not connected |
2 | RXD |
Received Data |
3 | TXD |
Transmitted Data |
4 |
DTR* |
Data Terminal Ready |
5 | GND | Ground |
6 | CTS | Clear to Send |
7 | RTS | Request to Send |
8 |
+5V |
*DTR is used as a power supply for some input devices and cannot be used as an active handshake signal.