52Pi Ultra Thin Ice Tower Cooler Cooling Fan for Raspberry Pi 4 Model B CPU Fan

[Description] This is an ultra-thin ice tower cooler that only supports Raspberry Pi 4B. It includes ultra-thin fans and supports fan speed regulation. The speed can be controlled by programming the GPIO pins of the Raspberry Pi, and the heat sink is ultra-thin. Here is the link of the case with ultra-thin ice tower cooler:  Aluminum Black Case With Ultra Thin Ice Tower Cooler Cooling Fan For Raspberry Pi 4 Model B   [Features] Ultra Thin Support fan speed regultion Support Raspberry Pi 4B ONLY Good Heat dissipation effect   [52Pi WiKi] EP-0163 - 52Pi Wiki   [Package Includes] 1 x Ultra Thin ICE Tower Cooler 4 x Screws 1 x Screw driver 4 x Thermal Pad Note: Raspberry Pi Board is not included