Specification: Origin: Mainland China Accessory Type: Extension Board Compatible With: for Raspberry Pi 4B Material: aluminium alloy Accessory Type: Shell Product colour: black Product Size: 90x65x32mm/3.54x2.56x1.26inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Raspberry Pi 4 Case (Black) 1. Enhanced Cooling: This raspberry pi 4 case comes with a large heat sink that improves heat dissipation, offering excellent thermal design. With this efficient cooling solution, there's no need to install cooling fans or additional heat sinks, ensuring optimal performance and temperature management for Raspberry Pi 4. 2. High-Quality Aluminum Construction: The Pi 4B cooling case is constructed from high-quality aluminum material, providing durability and effective heat dissipation. Its sturdy build ensures long-lasting protection for your Raspberry Pi while maintaining an elegant appearance. 3. Easy Installation: Installing the raspberry pi housing enclosure is hassle-free, thanks to its user-friendly design. It includes all the necessary hardware and allows access to all ports and connectors of the Raspberry Pi, ensuring convenient connectivity and functionality. 4. GPIO Wire Interface Compatibility: The Pi 4 model B passive cooling case features a reserved GPIO wire interface, allowing for easy installation and compatibility with GPIO cables. This enables seamless integration with other devices and expansion boards, expanding the capabilities of your Raspberry Pi. 5. Micro SD Card Accessibility: With its well-designed structure, the heat dissipation metal case provides easy access to insert and remove the micro SD card. This facilitates smooth operation and flexible storage options for Raspberry Pi projects.