The Arduino Mega ADK's microcontroller (ATmega2560) can handle the maximum voltage of 5.5V DC. LEDs: The board utilizes several LEDs, including a power LED, a pin 13 LED, and a RX and TX LEDs which indicate when data is being transmitted or received.Power Jack: The board has a 2.1 mm center-positive power jack, which can be used for connecting an external power supply, such as a battery or wall adapter.In those scenarios the board acts as the USB host. The other is USB type A connector that can be used to connect other USB devices to the board. One USB type B which can be used for programming the board and for providing power to the board. USB Connector: The board has two USB port.ICSP Header: The ICSP header is intended for programming the board with an external programmer.

Reset Button: The reset button can be used to restart the microcontroller or to put it into bootloader mode for uploading new sketches.The board also has a VIN pin, which is the input voltage to the board when it is powered by an external power supply. Power Pins: Arduino Mega ADK have several power pins, including 3.3V and 5V pins, which can be used to power other devices or sensors.Analog Input Pins: The board provides 16 analog input pins, which can be used for reading analog sensors, such as temperature sensors, light sensors, and potentiometers.15 of these pins can also be used as PWM outputs for controlling the brightness of LEDs or the speed of motors as an example. Digital I/O Pins: The board has 54 digital input/output pins, which can be used for a variety of purposes, such as reading sensors, controlling LEDs, and communicating with other devices.Dimensions: The board measures 101.52mm x 53.3mm.Here are a few of the most important components and connectors to be aware of: The Arduino Mega ADK is a relatively large development board that is packed with a variety of components and features. Arduino Mega ADK Rev3 Pin Headers and Components

Arduino mega 2560 atmega chip pinout