The board is for FTDI’s popular USB to UART IC. Now with internal oscillator and EEPROM, the FT232RL is an impressive IC. Royalty-Free Driver support for Windows, Linux, and Mac OSX.

• Implements full v2. 0 USB protocol
• Internal EEPROM for device ID and Product Description strings
• Expansion FT232RL IO for RS-232, bit-bang, or special function modes
• POWER, RXD, TXD, LED status indicatiors
• Power by USB, can be choose 5V or 3. 3V level ( set by jumper )