Arduino Mega 2560 is an open source development board based on Atmega2560 AVR microcontroller using ATmega16U2 Microchip Technology.
Arduino Mega 2560 - DEV-09949 - SparkFun Electronics
A Comparison of Popular Arduino Boards, Arduino
An Arduino Mega 2560 CH340G is a replica or imitation of the original Arduino Mega 2560, which is an official Arduino board. CH340G versions are
Mega 2560 CH340G (Clone to Arduino Mega 2560 R3)
Arduino Mega 2560 R3 Compatible with ESP8266 WiFi MCU and 32 Mb
Arduino Mega 2560 Microcontroller Rev3 - RobotShop
Pinout Arduino Mega : r/OpenAstroTech
INTRODUCTION TO Arduino mega 2560
Arduino Mega 2650 - Aero 3D Studios
Inland Mega 2560 MainBoard Arduino Compatible; 16MHz Clock Rate
Arduino® UNO R4 Minima — Arduino Official Store
Arduino Mega 2560 Rev3 - Melopero Electronics
Arduino Mega R3 I2C issues, nothing seems to talk - Arduino - Core
Arduino Board Comparison Guide
Diy Arduino mega Pcb - Share Project - PCBWay
Considering Arduino Mega? Watch this first!