Open case with high-speed fan and sturdy back panel. The high-speed fan ensures effective heat dissipation. A motor with reverse polarity prevents accidental damage to the fan. The robust back panel allows for work and testing in an open environment. Compatible with Tinker Board and Tinker Board S. The Tinker Open Case DIY Kit is equipped with a high-speed fan for heat dissipation and a metallic circuit board back panel to hold the board and create more space for better heat dissipation. For those who want to work with the Tinker Board in an open environment, this DIY kit is the ideal companion. The practical reverse polarity motor protects the fan from damage if the cable is accidentally connected the wrong way. Additionally, the high-speed cooling fan is significantly quieter and compatible with 5V and 3.3V power consumption. By changing the power consumption, you can also adjust the fan speed. The sturdy back panel helps prevent short circuits on the circuit board and prevents the board from bending in certain environments.