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Compact black PWM fan controller with rotary knob and 50cm cable

Ruth's sister

Ruth's sister Fan Controller PWM 12V 30W 50cm internal power cable

SKU CH-GCSH-ZHMGM

Controls 3-pin and 4-pin PWM case fans manually via rotary dial, delivering up to 30 W from a 12 V supply with a 50 cm cable

  • Manual speed control via rotary knob for precise airflow
  • 12V supply voltage powers compatible case fans directly
  • 30W regulation capacity handles multiple fan headers
  • 50cm cable length reaches most chassis fan mounts
  • Supports both 3-pin and 4-pin PWM fan connectors

Fan controller with 30 W PWM regulation

This 12 V internal cable adds manual rotary speed control for small 3-pin or 4-pin case fans. It is built for builders who want a simple hardware knob instead of software curves. The 50 cm lead reaches most motherboard headers without strain. No driver or BIOS setup is required.

Thermals noise and 12 V power draw

The unit passes up to 30 W through the PWM circuit so fan speed scales with the dial position. Voltage regulation spans 3 V to 12 V letting fans spin down to near-silent levels at idle. No active cooling or fan is present on the controller itself. Power draw is limited to the connected fans' rated current.

Manual rotary dial for 3-pin and 4-pin headers

The single specification that decides fit is the small 3 / small 4P fan interface combined with manual rotary speed regulation. Buyers who need automatic temperature curves or software-addressable RGB control will not get those functions from this cable.

Highlights

  • Manual speed control via rotary knob for precise airflow
  • 12V supply voltage powers compatible case fans directly
  • 30W regulation capacity handles multiple fan headers
  • 50cm cable length reaches most chassis fan mounts
  • Supports both 3-pin and 4-pin PWM fan connectors

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the 50 cm cable and the 3-pin or 4-pin fan header, and which step is often missed?

Plug the controller into a 12 V motherboard header, then attach each fan to the small 3-pin or 4-pin ports; the step people miss is setting the rotary knob before closing the case.

What maintenance or replacement will the controller need over time?

The unit has no user-serviceable parts; if the rotary potentiometer wears out or the 30 W limit is exceeded, the whole controller must be replaced.

What is the first limit reached when running fans continuously at high speed?

The 30 W total power rating is the first limit; drawing more than 30 W across all connected fans will trigger thermal protection or shutdown.

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