This is the SparkFun USB to Serial Breakout for the FT232RL, a small board with a built in USB to serial UART interface. This little breakout is built around the FT232RL IC from FTDI, with an internal oscillator, EEPROM.
ICSP 6 pin Connector TTL output (only Switching the voltage switch logic voltage can be change into 3.3V to 5V) - VOLTAGE SWITCH IS NOT CHANGING OUTPUT SUPPLY VOLTAGE
5V (No 3.3V output, Only logic voltage)
USB to FT232RL Serial/ TTL Converter Module
Logic voltage switch TX,RX LED indicators