Introducing the HKM-131091 5-Port 4-Pin PWM CPU Fan Hub—an essential tool for PC builders and enthusiasts seeking to enhance their cooling efficiency. This innovative fan hub is crafted to expand a single motherboard PWM fan header, allowing you to connect up to five fans easily. This not only improves airflow but also contributes to better overall performance in your computer setup.

Constructed from high-quality nylon and plastic, the HKM-131091 showcases a sleek black design that seamlessly integrates with your existing components. It is compatible with both 3-pin and 4-pin fans. However, it's important to note that 3-pin fans will operate at full speed due to the lack of PWM control, while 4-pin fans can automatically adjust their speeds responding to PWM signals.

One standout feature of the HKM-131091 is its efficient RPM signal reading. Since only one RPM signal can be received by a motherboard connector, the hub ensures that the motherboard accurately detects the RPM of the fan connected to channel 1. This guarantees that all connected fans react uniformly to PWM signals, allowing for synchronized speed control when using compatible fan controller software.

The HKM-131091 also simplifies your cable management process. It comes equipped with a self-adhesive backing for easy installation and options for concealing the printed circuit board (PCB), helping you maintain a tidy build. The product operates at a voltage of DC 12V and features a compact design with an approximate length of 39.5 cm, making it a practical addition to your setup.

While this hub significantly expands your fan connection capabilities, it is not a standalone fan speed controller. It is designed to work in conjunction with controller software for 4-pin PWM fans, while 3-pin fans will continue to run at their maximum speed.

In summary, the HKM-131091 5-Port 4-Pin PWM CPU Fan Hub is a reliable and effective solution for enhancing your cooling system, allowing you to keep your computer running efficiently and quietly, even during demanding tasks.