1. This expansion board is compatible with Raspberry Pi 3 2 B/B+.
2. The breadboard allows you to easily plug in and remove components and so if there are going to be many changes or if you just want to make a circuit quickly, it will be much quicker than soldering up your circuit.
3. Besides, multiple breadboards of the same size can be combined by parallel horizontally or vertically. Breadboards can be used for numerous times so they are environmentally-friendly.