1. For for Arduino MEGA / MEGA2560 Proto Shield prototype expansion board with Immersion Gold PCB processing technology, motherboards, small gold square pad spacing, welding components easier. 2. SOP28 SMD component package to be more handy with for Arduino electronics enthusiasts will not be directly insert bound components. 3. The board can receive MEGA / MEGA2560 seamless plug controller, directly soldered to the above components to complete a variety of prototype circuit, you can paste Mini bread board, through the 7-color jumper to complete a variety of circuit experiment , board integrated power indicator and status lights, and reset buttons, easy to learn MEGA / MEGA2560 preferred prototype controller expansion board. 4. Full Compatible with for Arduino Mega ATmega1280 / MEGA2560. 5. Size:20cm x 15cm.