Arduino Mega 2560 R3 - Serial Port Basics

Discontinued - you can grab Adafruit Grand Central M4 Express featuring the SAMD51 instead!

Arduino Mega 2560 R3 (Atmega2560 - assembled)

How to Set Up UART Communication on the Arduino - Circuit Basics

Arduino Mega 2560 R3 , from Arduino LLC for €36.90

UCTRONICS Ultimate Starter Learning Kit for Arduino MEGA - RobotShop

pinout questions: Meduino Mega2560 R3 Pro Mini ATMEGA16U2 - Project Guidance - Arduino Forum

Mega.comclarduino Mega 2560 Starter Kit With Cp2102 Usb & Tutorial - Ks0079

Arduino: Arduino Mega 2560 serial port location

The MEGA 2560 Development Board for Arduino IDE is based on the ATmega2560 MCU with 16MHz and provides 54 digital ports and 16 analog inputs; 4 UARTs

MEGA 2560 R3 Development Module with CH340 USB UART - Compatible with Arduino MEGA2560

Simple Introduction to the Arduino Arduino Mega 2560 Hardware Overview by kaushik classes

Ultimate Guide to Arduino Mega 2560 Pinout, Specs & Schematic

Introduction to Arduino Mega 2560 Rev3 - The Engineering Projects

Keyestudio MEGA 2560 R3 Development Board With USB Serial Chip CP2102

109 Arduino Basics - Serial Port MEGA VS UNO - Arduino Programming Tutorial

Master-Slave SPI Communication And Arduino SPI Read Example

Arduino - Wikipedia