This is a USB serial TTL 3.3V cable，terminated with a 3.5mm audio jack connector which provides access to the TX, RX and GND signals.

Note:
PINOUT: Tip- TX (device-RX), Ring-RX(device-Tx), Sleeve-GND. please check the pinout carefully before purchae it.
TTL Logic Level: 3.3V

Specification
Connectors: USB 2.0 serial TTL connector, 3.5mm jack
Chipset: FTDI 232RL
Cable length: approx 6FT

List of supported systems
1.Windows XP,7,8,10
2.Ubuntu 11.10, kernel 3.0.0-19 or above
3.Mac OS X 10.3 to 10.8 (32 &64 bit)
4.Mac OS X 10.9 and above(64 bit)
5.PC or notebook with a free USB type A port
You can download the driver directly from FTDI's website

Package Content:
1 X USB Serial RS232 to 3.5 mm Jack Cable
1 X Driver CD

WARRANTY:
We back this USB Serial TTL to 3.5 mm Jack Cable with 24 months warranty.If you meet any question, Please contact us, we will fix your issue within 24 hours.

Important Notes
This product uses FTDI FT232RL chip by default, because of the chip out of stock, some production batches use FTDI FT232RNL model chip . Please do not worry, FT232RNL is also the chip produced by FTDI, can completely replace FT232RL. If you still care about these please contact us.