Uno Prototype Shield v5, Expansion Board with Miniature 170 Pt. Breadboard fitted for Arduino and compatible Uno boards, RBTMKR Protoshield v5 expansion board for learning and experimenting with Arduino and compatible UNO development / controller boards. It can be directly connected via the Male pins on the bottom side of the shield to a Uno due to the matched pin headers, or on your bench connect select pins with jumpers and the handy mini breadboard. Fully Compatible with Arduino and compatible Uno boards. High quality and reliable product.