To help support the micro USB connector (updated from a Mini USB), the CH340C Serial-USB converter IC allows the RedBoard Qwiic should reduce the need for you to manually install drivers allowing for newer operating systems to automatically recognise and install the drivers for the board. The jumpers for the A4 and A5 pins are tied directly to the I2C bus and can be used to disconnect the logic level converters from the pins while the voltage level jumpers can switch the RedBoard Qwiic from a 3., 3V device to a 5V device (no logic level converter needed). 20 Digital I/O Pins (6 PWM Outputs and 6 Analog Inputs), ISP Header, 32k Flash Memory, 16MHz Clock Speed, All SMD Construction, R3 Shield Compatible, Improved Reset Button With the improved AP2112 voltage regulator, this Reboard gains a more robust 3., 3V regulator that provides it more power to daisy chain multiple Qwiic boards and sensors, sourcing up to 600mA of current. Fast shipping from our UK store Lastly, they have made sure to add a few solder jumpers to the board. The best part about the RedBoard Qwiic is that (as the name implies) it utilises the handy Qwiic Connect System which means no soldering or shields are required to connect it to the rest of your system! Wiring diagram. A) SparkFun RedBoard Qwiic; red, green and black jumper... Utilises the handy Qwiic Connect System which means no soldering or shields are required to connect it to the rest of your system! The SparkFun RedBoard Qwiic is an Arduino-compatible development board that uses a few of the features that they loved about Arduinos of the past while also incorporating a few key improvements over the original RedBoard. CH340C Serial-USB Converter, AP2112 Voltage Regulator, A4/A5 Jumpers, 3., 3V to 5V Voltage Level Jumper Carte Développement Compatible Arduino SparkFun RedBoard Qwiic - Kompatibel Mit Arduino - Robotikgeschäft Sparkfun Qwiic Scale SparkFun RedBoard Plus - Arduino Compatible Development Board With USB-C & Qwiic System SparkFun RedBoard Plus ATmega328P With USB-C Qwiic System Improved AP2112 voltage regulator sourcing up to 600mA of current to daisy chain multiple Qwiic boards and sensors.