Raspberry Pi Serial
Just so I don’t forget, my PL2303HX based TTL serial cable is supposed to be connected to the Raspberry Pi B+ in the following way:
| Wire Color | Wire | GPIO header |
| Red | 5V DC | not connected |
| Black | GND | Pin 6 |
| White | RxD | Pin 8 (TxD) |
| Green | TxD | Pin 10 (RxD) |
Note that even though the power wire (red) is 5V, the signaling wires (white & green) are 3.3V TTL.
On Illumos, the Prolific chip uses the usbsprl driver.