Features: new and high quality This Metal Box is designed for RPi Compute Module 4 IO Board, Mini computer chassis, robust and dust-proof, nice looking. Easy to build your own RPi Compute Module 4 mini PC. Precise cut-out with clear label,each cut-out is completely aligned with the connector Comes with cooling fan, combined with the airflow vent, better heat dissipation Wall mount holes on two side, handy for mounting Suitable for binocular vision or RPi applications or other industrial occasions Specifications: Material:Metal Size:Approx.200.6mm/7.9inch Package Includes: 1x Metal Case (Top And Bottom) 1x 40pin GPIO Adapter 1x Fan PWM 12v 1x Screwdriver 1x Screws Pack note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.