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AJMRTC lowprofile ICE tower cooling fan is a highefficiency thermal solution specially designed for Raspberry Pi 4B, 3B+ and 3B singleboard computers. Adopting compact towerstyle heat dissipation architecture, this cooler provides superior heat transfer capability to draw heat away from the main chip, preventing overheating and performance throttling under highload tasks such as media processing, data computation and longterm embedded operation. Its lowprofile form factor avoids height interference, compatible with most common Raspberry Pi protective cases. Equipped with finetuned fan blades, it keeps noise at a low level while maintaining strong airflow. Preattached thermal pad guarantees stable thermal contact between heatsink and chip. Complete mounting accessories support fast DIY installation. This cooling tower is an ideal upgrade for makers, hobbyists and developers to stabilize Raspberry Pi working temperature. Please confirm your Raspberry Pi board model before installation.