| Color | Cable Function | Raspberry Pi 2/3/4 pin |
| RED | 5V | Not connected |
| Black | Ground | 23 – GND |
| White | RxD | 24 – TxD |
| Green | TxD | 25 – RxD |
Prolific PL2303TA USB to TTL RS232 serial cable Pinout
| Color | Cable Function | Raspberry Pi 2/3/4 pin |
| RED | 5V | Not connected |
| Black | Ground | 23 – GND |
| White | RxD | 24 – TxD |
| Green | TxD | 25 – RxD |