Adopts 40PIN GPIO and ejector pin to connect to Zero 2w motherboard design, which can be easily inserted The onboard standard CM3 core board golden finger interface allows easy access to expansion boards of the CM3 ecosystem. Lead out the USB interface, micro-SD card port, OTG, etc. through the ejection pin Lead camera via FPC -compatible via mini -compatible adapter board GPIO via socket Not compatible with Generation Zero Due to different batches, the appearance, color and printed words of the product , which will not affect the use. Colour:Blue Material:PCB Package Contents: 1 * Expansion Board Only the above package content, other products are not included. Note: Light reflection 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.