DSD TECH SH-U09G USB to TTL Serial Cable Built-in FTDI FT232RL IC 1.8M/5.9FTFTDI FT232RL Chip:Built-in original FTDI FT232RL Chip,High quality and high reliability.Ideal for programmers, hardware engineers and DIY User.1.8M/5.9 Feet: The length of the line is 1.8 meters(5.9 feet).ideal USB 2.0 debug tools for Vendor ID re-write, router, GPS, set top box, transmitter, flash firmware,Debugging,Programing , etc.PIN:this cable provides access to UART (transmit) Tx, (receive) Rx, VCC (5V) and GND,CTS,RTS.TTL Level is 3.3VCompatibility: This USB-to-TTL Serial cable is compatible with Windows 7, 8, 10 and various Linux OS and Mac OSCustomer Support:Offering permanent technical support and a 1-year product replacement service for this USB to UART cable.