Features 1、It has a variety of interfaces so it has very high scalability, very practical. 2、Made of high‑quality materials, strong and durable, providing all‑round protection to your microcomputer. 3、Professional production, it does not affect the WiFi signal, and the side slot can be installed with GPIO cable. 4、3.5‑inch display screen and fan cannot be installed at the same time due to PIN occupancy. 5、Increase the power cooling column to bring better heat dissipation, so you are no longer worried about overheating. Specification Condition: 100% Brand New Item Type: 4 Model B Heatsink Case Material: ABS Color: Black Fitness: Fit for Raspberry PI 1G 2G 4G Features: A 3.5-inch touch screen or fan can be installed. Size: Approx. 90 x 61 x 35mm / 3.5 x 2.4 x 1.4in Package List 1 x 4 Model B Heatsink Case 1 x Pack of Accessories Package