2PCS 1M FTDI FT232RL USB to Serial Adapter Module USB to TTL RS232 Cable 6Pin
The cables provide a fast, simple way to connect devices with a TTL level serial interface to USB. devices with a TTL level serial interface to USB. TTL levels is 3.3V. Cables are FCC, CE, RoHS compliant and are available at TTL levels 3.3V.