52Pi Raspberry Pi Cooling Fan, Raspberry Pi ICE Tower Cooler, RGB Cooling Fan with Raspberry Pi Heatsink for Raspberry Pi 4 Model B & Raspberry Pi 3B+ & Raspberry Pi 3 Model B

Features

DC 5V Power in (Can be powered by the Raspberry Pi)

Ice Tower Structure

5mm copper tube

Super heat dissipation

Rated power 0.4W @5V, 0.08A

Super Cool fan background light (RGB Color)

Easy to setup

Compatible with Raspberry Pi 3B+/4B

Adjustable Speed Fan (Upgrade version)

This is a fan that supports PWM pulse width modulation signal to control the speed, suitable for various DIY environments, you can program the blue pin and control the fan speed through the PWM signal. If you connect it to your Raspberry Pi, the latest Raspberry Pi OS will support Fan speed control via CPU temperature function, and you need to enable it by using raspi-config tool.

ChangeLog

Upgrade to 3 wire control, Red wire connect to 5V, Black wire connect to GND, Blue wire connect to GPIO(which support PWM signal output)

Support PWM signal control fan speed.(Need programming)