Manual PWM Speed Controller Hub — Small 4P for 12V Fans & Water Pumps (DIY Water Cooling Kit)

Take direct, manual control of 12V fans and water pumps with this compact PWM speed controller. A simple, user-friendly knob lets you fine-tune RPMs without any technical setup, making it ideal for beginners and experienced DIY builders alike. Designed as a 4P connection hub, it accommodates multiple 4P fans and water pumps at once while providing stable power distribution for consistent performance. Suitable for computer cooling systems and a wide range of other projects, the unit is built from durable materials to withstand continuous operation and deliver long-term reliability.