USB to serial converter BB-CH340T

Implements CH340
Fully open hardware design
USB mini connector - USB 2.0 Full Speed compatible
Serial interface with variable baud rate - 50 bps to 2Mbps
Breadboard-friendly - 4 pin 0.1" header
Extracts power from the USB - can provide either up to 80mA@3.3V or up to 450mA@5V
3.3V or 5V output controlled by an SMT jumper - soldered by default to 3.3V
Serial datalines (RXD and TXD) kept at same voltage levels as the selected voltage output
PCB dimensions: (1000x1050)mil ~ (25.5x26.5)mm