Case Cover Cooling Protective Box for Raspberry Pi 5 Variable Speed Ultra-thin design, easy to install, fast Heat dissipation. All ports and slots of the case can match for Raspberry Pi 5. In the open case design, you don't need to worry it will affect the wifi signal anymore. Reinforced aluminum material, lightweight and durable, long-lasting stainless. We use a silicon cooling pad (the thickness is only 0.5mm) to touch the shell body to dissipate heat. The fans are low power consumption design, a very quiet cooling fan, get rid of the fan noise. Comes with a PWM fan to monitor and adjust your cooling at any time Type:Variable Speed Colour:Black Material:Aluminum Alloy Package Contents: 1 * shell 1 * supporting mounting screws 1 * silent fan Only the above package content, other products are not included. Note: Light reflection 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.