Features: The FT232R is a USB to serial UART interface A low-cost way to add USB capability to For Arduino or other microcontrollers. Use this to give your own breadboard For Arduino USB capability for bootloading or downloading sketches. RXD/TXD transceiver communication indicator Includes over-current protection, using a 500ma self-restoring fuse This board includes a DTR pin needed to auto-reset For Arduino when downloading to your device. Specifications: Color: Red USB Power Supply: 3.3V or 5V Size:43*17mm Net weight: 4 g