Features: Chipset: FT232RL, not genuine FTDI chip, Working Voltage: 3.3V/5.5V. Pin Definition: DTR,RXD,TX,VCC,CTS,GND. RXD/TXD transceiver communication indicator, with 500MA self-resetting fuse. Application: Switch and Sensor for Arduino STM. Supports Win95/98/98se/ME/2000/XP/win7 32bit 64bit /Vsita/, does not support Win8. Brand new and high quality Specifications: Model Number: FT232RL FTDI USB Supply Voltage: 3.3V 5.5V Power Dissipation: 3.3V 5.5V is_customized: Yes Operating Temperature: -40-+85 Usage: Computer Package: DIY KIT Features: Electronic Module Note: No retail package. Please allow 0-1cm error due to manual measurement. Make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x USB 3.3V 5.5V to TTL Serial Adapter