DEV-15096 Serial Basic Breakout SparkFun DEV-15096 Serial Basic Breakout is a USB-to-Serial adapter based on the CH340C and takes advantage of the USB-C connector system. The Serial Basic Breakout works with 5V and 3.3V systems and can auto-install on most operating systems without additional drivers. SparkFun Serial Basic Breakout uses the CH340C integrated circuit to convert serial signals to USB. The USB-C provides up to three times the power delivery over the previous USB generation at 1.5A.