DEEPCOOL FH-04 PWM Fan Hub

The DEEPCOOL FH-04 PWM Fan Hub is a compact and efficient solution for users who need to expand their system’s fan connectivity, supporting up to four 3-pin or 4-pin fans from a single motherboard header. Designed for simplicity and space-saving installation, it comes in a lightweight build (22g) with dimensions of 68 × 13 × 17.5 mm and includes double-sided adhesive for easy mounting inside the case. The hub distributes both power and a single PWM signal from the motherboard to all connected fans, allowing multiple 4-pin PWM fans to synchronize their speeds according to the same control curve, while only the fan in Port 1 reports its RPM for monitoring. Although 3-pin fans can also be connected, they will run at full speed since they do not respond to PWM control. The FH-04 draws its power directly from the motherboard header without the need for extra SATA or Molex cables, making cable management cleaner, but users must ensure the combined current draw of connected fans does not exceed the header’s power rating. This hub does not provide individual fan control or RGB functionality, instead focusing solely on centralized fan power and PWM signal distribution. Compact, reliable, and cost-effective, the DEEPCOOL FH-04 is ideal for users who want to expand cooling options and simplify cable routing, provided they understand its limitations regarding monitoring and power draw.