Amazon.com: Songhe MEGA 2560 PRO Embed CH340G/ATMEGA2560-16AU Pro Mega Module with Male Pinheader Compatible with Arduino MEGA2560 : Electronics
Amazon.com: MEGA 2560 R3 Proto Prototype Shield V3.0 Expansion Development Board + Mini PCB Breadboard 170 Tie Points for arduino DIY Kit : Electronics
Amazon.com: KEYESTUDIO MEGA Prototype Shield V3 Board for Arduino Mega R3 2560, with 170 Points Breadboard Solderable, Easy to Use, Great for Prototyping Circuit Building Projects : Electronics
Amazon.com: DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Module with 4PIN Base Board for Arduino UNO R3 Mega 2560 Nano : Electronics
Amazon.com: OSOYOO Pro Micro ATmega32U4 5V/16MHz Module Board with 2 Row pin Header Replace with ATmega328 Pro Mini for Arduino : Electronics
Electronics-Salon DIN Rail Mount Screw Terminal Block Adapter Module, for Arduino MEGA-2560 R3.: Amazon.com: Industrial & Scientific