This is a pin map for the Arduino Mega 2560 Rev3. All used ports are

arduino mega - ATmega 32A and 2560 R3 register to pin mapping? - Arduino Stack Exchange

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Arduino Mega2560 R3 pinouts photo - Microcontrollers - Arduino Forum

The Arduino Mega 2560 is a microcontroller board based on the ATmega2560 with 16 MHz tank frequency. It has 54 digital inputs and outputs, 16 analog inputs, four serial interfaces and a USB connection. The necessary components for programming and operation of the microcontroller are provided on the board. Simply connect the board to your PC and develop exciting applications. Power can be supplied via micro-USB, an external power supply unit or batteries.

Arduino Mega 2560 Rev3 A000067

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Arduino Mega2560 R3 pinouts photo - #35 by GolamMostafa - Microcontrollers - Arduino Forum

Cool adapter board! What are the row of pins called? : r/esp32