Compatible with all versions of raspberry pie footnotes, Raspberry pin pins can be used, the board is suitable for 4B/4B+/3B+/3B/2B+/2B/BThe Expansion board is made of PCB process, it with LED, will bring the dazzling effect. You could see the LED light from heat sink after you finished the installation.Clear pin , GPIO function fully displayed. All GPIO pins are pulled out, So when the is being cooled, development function will not be affected.The cooling fan adopts active cooling mode, the heat can be discharged in time. On the other hand, keep the connection to be convenient.Product Performance:Compatible with multiple versions of ; All GPIO pins are pulled out, So when the is being cooled, development function will not be affected.The fan adopts active heat dissipation mode, which is passive heat dissipationProduct Parameters:Nominal voltage: DC 5VCurrent: 0.2Asize: 6.5 x 5.6 x 0.9cmMaterial: PCBcolour: blackPackage Contents:1 x Expansion Board with FanOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.