How to use: Search for "keyestudio wiki KS0499" in Google Chrome to get the wiki online tutorial for this product. Technical supports are available at any time!. The yellow text on black board makes identifying pinsets a breeze. FCC and CE is available. Additional SPI communication interface, IIC communication interface, Serial communication interface(4 channel); Serial2 (D17 is RX2, D16 equals to TX2), Serial3 (D15 is RX3, D14 is TX3), D0 and D1 are connected to MCU; External interrupt pins. The USB-to-Serial chip of this board is stable and compatible CP2102; USB connector of it is Type C USB Port; Up to 5V, 1.5A output, can drive drive high-current devices like servo and motor. This Mega Plus board can work like the Arduino Mega R3 2560 but it is more powerful and has more pins.