LüfterHubs

LüfterHubs are devices that consolidate multiple cooling fans into a single management point for power distribution and speed control. They can be as simple as passive splitter hubs that relay supply voltage to several fans, or as advanced units with built‑in controllers that regulate speed via PWM signals and tachometer feedback. LüfterHubs aim to reduce wiring clutter and conserve motherboard fan headers in compact or high‑fan‑count systems.

Design and variants: Passive hubs provide power distribution without processing signals, while active hubs include microcontrollers or dedicated controllers that implement cooling profiles based on temperature readings. Connectors typically include 3‑pin and 4‑pin PWM headers, and some models add SATA or PCIe power to handle higher current. Quality ranges from basic off‑the‑shelf hubs to multi‑channel controllers with configurable curves and temperature sensors.

Operation: PWM‑capable hubs forward a control signal from the motherboard or the built‑in controller to multiple fans, commonly with individual tachometer feedback. Some hubs offer independent channels, allowing different groups of fans to run at different speeds. Considerations include the hub’s total current rating, voltage drop across splits, and potential fan synchronization issues.

Applications: LüfterHubs are used in desktop PCs, small form factor builds, servers, and industrial equipment where many fans must be managed efficiently. They are also found in custom cooling setups for graphics cards or CPUs.

History and see also: The concept emerged with growing cooling demands in consumer and professional electronics during the 2000s and 2010s. See also: fan controller, fan hub, PWM controller, fan splitter.