HiLetgo FT232RL FTDI Mini USB to TTL Serial Converter Adapter Module 3.3V 5.5V FT232R Breakout FT232RL USB to Serial Mini USB to TTL Adapter Board for Arduino Chipset: FT232RL, not genuine FTDI chip, Working Voltage: 3.3V/5.5V RXD/TXD transceiver communication indicator, with 500MA self-restore Fuse Pin Definition: DTR,RXD,TX,VCC,CTS,GND Support Win95/98/98se/ME/2000/XP/win7 32bit 64bit /Vsita/, do not Support Win8 Please download the driver and files at link: http://www.ftdichip.com/FTDrivers.htm.