This USB to TTL 3 Pin Header has GND, Tx and Rx Lines and it's I/O lines (Tx, Rx) are configured to operate at +3.3V levels.

This features the FTDI chipset - FT232R IC e.g. Supports FT232R FTDIChip-ID™

This FTDI USB to TTL serial adapter cable can fit be used with many different boards & applications which include RS232 Interface
Loggers and also many new designs which require TTL logic.

This USB to TTL has 3V3 level drive outputs and 5V safe (tolerant) TTL inputs which makes this
USB to TTL easy to interface to 3V3 MCUs.
 

Single Pin Headers to allow you to use it with multiple devices which may have Tx, Rx lined differently.

The FTDI USB to TTL is made using USB 2.0 specification cable and marked CE & FCC approved.

This FTDI USB to TTL serial cable is 1.8M (nominal) in length with a 2.54mm (0.1") pitch 3 way header header (GND, Tx, Rx,)

 

USB to TTL +3.3V I/O Serial Cable- (TRX133S) - 3 Way Pinout below:

Pin Out :  Wire Colour   : Function   
   1       :   Black     :    Ground
   2       :   Orange :   TTL Transmit Tx (output)
   3       :   Yellow   :   TTL Receive Rx (input)

Model may vary slightly in appearance depending on batch however same high quality FTDI chipset used.

Serial baud: 300 - 2764800bps (3Mbps) at TTL level.

Supports OS:

Installation & USB Drivers:
Driver Install Guides
VCP Drivers
D2XX Drivers