【Pi 4 Aluminum Case】Compatible with Raspberry Pi 4 Model B 1GB/2GB/4GB/8GB. 【Passive Cooling Design without Fan】Good cooling performance - Its metal shell can release heat directly into the air, allowing your Pi TEMP to cool down without a fan. The large cooling column allows for better heat dissipation. 【Upgraded Heatsink Design】Metal housing with heatsink - metal heatsink for CPU, LAN, RAM, USB and power chip. 【Aluminum Alloy material】Made of aluminum alloy, which provides efficient thermal conductivity and fast cooling performance. The anodized process on the surface of the metal improves the quality of the case visually and actually. 【Packing List】1X Raspberry Pi 4 aluminum case. 1x aluminum cooler, 5x thermal pads, 1x hex key, 1x screw package. Note: Raspberry Pi board and fan not included.Note: Raspberry Pi board and fan not included.