Features: All ports and slots of the for case can fit perfectly with for Orange Pi Zero. Durable, hard, long-lasting rust-free, wear-resistant, and can be well protected to your for Orange Pi Zero . Increase the power cooling column to bring better heat dissipation to your for Orange Pi Zero . No longer worry about overheating. There is no need to install a fan. It also provides perfect heat dissipation. brand new and high quality After testing, it will not affect the WIFI signal. Increasing the large Cooling column allows for better heat dissipation. Specifications: Size: approx. 52x47x15mm/2.05x1.85x0.59in Material: Aluminum alloy Color: black Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Package includes: 2 x Aluminum Alloy for Case 4 x Thermal Adhesive Pad 1 x Screw Set