Overview Firm Metal Case for Raspberry Pi 4, with Low-Profile ICE Tower Cooling Fan Features Simple two-part design, easy to setup by just fixing the screws, airflow vents all over for better cooling Package Contains PI4-CASE-METAL x1 For more details you may need to know, pls firstly send me message via Amazon, I will then send attached document including User Guide for you, thank you for patience.;D