USB to TTL Serial Cable - Debug / Console Cable for Raspberry Pi (Adafruit 954)

The cable is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port. Inside the big USB plug is a USB<->Serial conversion chip and at the end of the 36" cable are four wire - red power, black ground, white RX into USB port, and green TX out of the USB port. The power pin provides the 5V @ 500mA direct from the USB port and the RX/TX pins are 3.3V level for interfacing with the most common 3.3V logic level chipsets. 

Because of the separated pin plugs, this cable is ideal for powering and connecting up to the debug/login console on the Raspberry Pi or BeagleBone Black. Connect the pins as shown to power the Pi or BBB and establish the RX/TX link. Then install the Windows  or MacOS X PL2303HX.A drivers on your computer and connect with a terminal program at 115200 baud. Windows 8 is not supported. If you're using Windows  and you have issues, try this Prolific driver version 1.013 

The USB to TTL Serial Cable provides an easiest way to connect your microcontroller, Raspberry Pi, BeagleBone Black, WiFi router or even hard disk. It often be used as serial port communication so that can help you debugging your equipment and upgrade.

NOTE: Don’t connect the GND port to non-GND, it may break the PL2303HX chip.

Features:

• Serial port communication
• User-friendly
• Specification:
• Chip: PL2303HX
• Light: 1 Meter
• Wire specification: 
• Red: +5V
• Black: GND
• Green: TxD
• White: RxD

Software:
PL2303 Driver

Also handy for hacking WiFi routers to install alternate OS's, or nearly any other TTL port. This is easier to use than an FTDI cable in many cases because the wires are separated 

This cable is not good for Arduino re-programming such as a Boarduino, MENTA, Monochron, etc. because it does not have the DTR/RTS wire necessary for initiating the bootloader reboot sequence. For that we suggest an FTDI cable or FTDI friend.

There are four wires: red power, black ground, white RX into USB port, and green TX out of the USB port. 
The power pin provides the 5V @ 500mA direct from the USB port and the RX/TX pins are 3.3V level for interfacing with the most common 3.3V logic level chipsets.

There are four wires: red power, black ground, white RX into USB port, and green TX out of the USB port. 
The power pin provides the 5V @ 500mA direct from the USB port and the RX/TX pins are 3.3V level for interfacing with the most common 3.3V logic level chipsets.

Windows XP/Vista/7/8 or MacOS X PL2303HX.D drivers 

PL2303HX.D datasheet