Ventisonic&reg; GY-232 FT232RL USB To Serial Adapter Module USB TO 232 Download Cable For Arduino Chip: FT232RL Draw out all signal port of FT232RL chip. RXD/TXD transceiver communication indicator. USB power supply, can choose 5V or 3.3V ,set by jumper. Package Included: 1 x FT232RL USB To Serial Adapter Module