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Small black rectangular PCB with one 4-pin PWM input and eight 4-pin PWM output headers

Phobya

Phobya 81136 PWM Splitter PCB 1-to-8 case accessory

SKU CH-HKW8-6VV52

A PWM splitter PCB that distributes one 4-pin signal to eight fan headers for radiator arrays

  • ColorsBlack
  • FeaturesThis breakout PCB takes a 4-pin PWM power cable and splits i
  • Splits one PWM header into eight fan channels
  • PWM and tachometer signals preserved on main output
  • Supports up to eight 4-pin PWM fans
  • Three-pin fans work without PWM speed control
  • Compact black PCB suits radiator and multi-fan builds

Phobya 81136 PWM Splitter PCB 1-to-8

This Phobya splitter PCB takes a single 4-pin PWM header and distributes the signal across eight 4-pin outputs. It is designed for builders who need to run multiple fans from one motherboard connector. The board supports PWM control and passes the tachometer signal from the first channel back to the board.

Suits radiator stacks and large similar-fan arrays

The splitter works with any 4-pin PWM fan and also accepts 3-pin fans, though those will run without PWM regulation. Builders who need independent speed curves for each fan, or who want to mix fan models with different speed ranges, should look at a controller that offers per-channel management.

Eight 4-pin PWM outputs from one header

The decisive specification is the 1-to-8 split: one 4-pin PWM input feeds eight 4-pin PWM connectors, with PWM and tachometer wires carried through on the first channel. This determines whether the board matches the fan count and control scheme your build requires.

Highlights

  • Splits one PWM header into eight fan channels
  • PWM and tachometer signals preserved on main output
  • Supports up to eight 4-pin PWM fans
  • Three-pin fans work without PWM speed control
  • Compact black PCB suits radiator and multi-fan builds

Specifications

BrandPhobya
Model81136
Part Number81136
ColorsBlack
FeaturesThis breakout PCB takes a 4-pin PWM power cable and splits it into eight channels. Perfect for radiators and large similar-fan setups.

Questions about this item

How do I install the Phobya 81136 PWM splitter PCB, and which connection step is commonly missed?

Connect a single 4-pin PWM source to the input header, then attach up to eight fans to the output headers; the step often missed is ensuring the PWM and tachometer wires are seated on the correct pins so speed control and RPM reporting work.

What maintenance or replacement will the Phobya 81136 PWM splitter PCB need over time?

The PCB itself has no moving parts and requires no scheduled maintenance; only the attached fans may need cleaning or replacement, and cables should be checked if a channel stops reporting RPM.

What is the first limit that appears when running eight fans continuously through the Phobya 81136 PWM splitter PCB?

The shared PWM signal drives all eight outputs identically, so the first limit is that every connected fan must accept the same duty cycle — individual speed curves are not possible.

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