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Black metal AC/DC adapter controller with four-way PWM splitter cable

Westinghouse 123A-4 36W 3-12V Fan Speed Controller with 4-Way Splitter

SKU CH-CHD8-ABZEF MPN 123A-4

Adjusts 3–12 V DC fan speed up to 36 W and splits power to four 3-pin or 4-pin fans from 100–240 V AC input

  • Item name123A-4
  • Included items1x 36 W AC DC Adapter controller with 4 way PMW Splitter Cab
  • Item description1x 36 W AC DC Adapter controller with 4 way PMW Splitter Cab
  • Product weight0.168 kg
  • Surface finishBlack
  • Product colorBlack
  • Adjust fan speed precisely with 3-12V DC adjustable output up to 36W
  • Power from any mains worldwide with 100-240V AC input at 50/60Hz
  • Control four fans at once using included 4-way PWM splitter cable for 3-pin or 4-pin
  • Place unit conveniently with 1.7m total cable reach combining AC input DC output and splitter
  • Lightweight metal housing at 0.168kg fits easily in PC cases AV racks or console setups

Fan speed controller for PC and AV gear

This Westinghouse 123A-4 unit converts 100-240V AC mains power into an adjustable 3-12V DC output rated at 36W. It is built for enthusiasts who want precise speed control over up to four 3-pin or 4-pin fans in computers, amplifiers, receivers or consoles.

Four-way PWM splitter cable included

The bundled splitter lets a single controller manage four fans at once, so all connected units ramp up or down together. A 5.5ft total cable reach — comprising 1.3ft AC input, 3ft DC output and 1.3ft splitter — gives flexible routing inside cases or equipment racks without extra extensions.

Metal housing with standard fan headers

The black metal enclosure weighs 0.168kg and measures 14.33in wide by 12.83in high by 9.06in deep. It accepts both 3-pin and 4-pin connectors, so builders can mix fan types without adapters, while the wide AC input range removes the need for a separate voltage selector when moving gear between regions.

How it compares

Measured against everything we stock in Fan Motors, Parts & Clip-On Fans, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 60% of the 473 comparable items (median $38.99).

Specifications

Product
Brand nameWestinghouse
Model name123A-4
Item name123A-4
Product colorBlack
Size & build
Product weight0.168 kg
Surface finishBlack
Main materialMetal
Product dimensions14.33 in W × 12.83 in H × 9.06 in D
In the box
Included items1x 36 W AC DC Adapter controller with 4 way PMW Splitter Cable

Questions about this item

Does the 36W adapter or the 4-way PWM splitter cable need periodic replacement?

The unit is a sealed AC-DC adapter with no user-serviceable parts; the 4-way splitter cable and controller are designed to last the life of the installation.

What limits continuous operation when four fans draw the full 36W?

The 3-amp current ceiling on the 3-12V DC output is the first limit reached under sustained load.

How much heat and noise does the controller produce when running all day at 12V?

The metal-cased adapter runs silently with no fan of its own; warmth stays within normal levels for a 36W external power supply.

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