suitable for Mini Terminal Breakout Board GPIO Expansion Board Terminal Breakout Board for 4B/3B+/3B/2B/1B+/Zero-YI WU CHUN HUI This is a mini terminal expansion board that is convenient for users to use for GPIO. It is suitable for . All 40pins of are transferred out by screw terminals, which is convenient for cable access. Does not occupy other space, convenient when doing DIY circuits. Easy to . Observe GPIO status. Legible miniscule printing of the labels of each of the GPIO pin's function. Material:PCB+Plastic+Metal colour:Black+blue Package Contents: 1 x Mini Terminal Breakout Board For 1 x Acrylic Pannel 1 x Screw Driver 1 set x Screws Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.