Raspberry Pi 4 passive cooling aluminum case is designed for Raspberry Pi 4 Model B computer only, support Raspberry Pi 4B 2GB 4GB version; WIKI for reference: raspberrypiwiki.com/index.php/P173Design with good heat dissipation, passive cooling design, no need to install the cooling fan or heatsink.Access to all ports of Raspberry Pi 4 Model B, GPIO cable interface is reservered, support to install the gpio cable.Made of high quality aluminium material.Note: The Raspberry Pi 4 Model B is not included in the packing list.Colour:BlackMaterial:AluminumPackage Contents:1 set x Aluminum Case for Raspberry Pi 4 Model B (Raspberry Pi 4B motherboard is not included)Only the above package content, other products are not included.Note: Light shooting 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.