Note: the Pi Zero 2W board is not included in the packing list. Features 1. Aluminum Passive Cooling Case -- Compatible with Raspberry Pi Zero/Zero W/Zero 2W, High-quality aluminum housing with built-in heatsink design for silent, effective cooling. The top plate and the bottom plate are both made of aluminum alloy) 2. Aluminum Alloy Heatsink Case, 4-Port USB OTG Hub, On/Off Power Switch Cable, Pin Header, Hexwrench, Thermal Pad. 3. 4-Port USB Expansion Hub -- Connect multiple USB devices (keyboard, mouse, storage, Wi-Fi dongle, etc. ) using a single micro USB port. 4. Safe Power Management -- micro USB cable with built-in on/off switch for easy shutdown and restart. 5. Thermal Pad for Heat Transfer -- Ensures maximum contact between the CPU and case for efficient cooling. Also equipped with a GPIO extender for expansion board extension. Package Include Aluminum Alloy Heatsink Case Pin Header Thermal Pad 4-Port USB OTG Hub On/Off Switch Cable Hexwrench