1.This is the GPIO header kit, include 4 type of 20x2 Pin s GPIO header. It can used for or other circuit board with GPIO2.This expansion board can expand one GPIO pin to two3.With 2 * 20pin double row connector, which increase the pin height to facilitate the connection between the expansion board and the4.With 2 * 20pin bent row pin header, the GPIO direction is perpendicular to the, which is convenient for the connection between the and other devices5.First solder the pins to the PCB, then insert it directly into theSpecification:Name: GPIO Header Kit forcolour: blackMaterial: ABS+metalPackage Contents:12*GPIO HeaderOnly 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.