Features: Brand new and high quality The 30mm fan specifically for Pi 5 to operate at temperatures, combination of cooling and active cooling with 30mm fan through aluminum casing and heat sink. By addings a heat sink to power management chip for Pi 5, cooling improved. it will become hot during heavy use. power button located on the back can perform the following operations by installing open-source scripts, allowing for safe shutdown, and forced shutdown. Suitable for Pi enthusiasts, electronic engineers, students, and who have a demand for Pi. project: Can to create projects such home controllers and media centers. Learning and education: for students to learn programming and conduct electronic experiments. Maker project: used to create maker projects intelligent. Commercial applications: used to develop commercial application such devices and home. Specifications: Aluminum Note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Package includes: 1Set Aluminum Case