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Black 120mm axial fan, four-wire connector, no LED

OEM Industries

OEM Industries 4112N/31HHA 120mm Fan 4-Wire 18W

SKU CH-N4RD-JM3MG

A 120 mm dual-ball-bearing fan with a 4-wire PWM connector and 18 W power draw

  • ColorBlack
  • TypeFan only
  • Fan Size120mm
  • Bearing Type2 Ball
  • Power Connector4 Wires
  • LEDNo
  • 120 mm fan fits standard CPU cooler mounts
  • 4-wire PWM connector enables precise speed control
  • Dual ball bearing design extends operational lifespan
  • 18 W power rating delivers strong airflow performance
  • ebm-papst engineering ensures reliable cooling quality

120mm 4-Wire Server Fan

The OEM Industries 4112N/31HHA is a 120mm fan built for server and workstation chassis that require a standard 4-wire PWM connection. Its dual ball bearing construction targets continuous duty cycles in rack environments. The unit draws 18W at 12V DC and matches the IBM 07K7056 part reference for direct replacement.

Ball Bearing Thermals and Acoustics

Dual ball bearings sustain steady airflow at high static pressure while keeping rotational friction predictable over long deployments. The 4-wire interface allows the host system to modulate speed under varying thermal loads, reducing acoustic output during idle periods. Power draw remains fixed at 18W when running at full voltage.

Drop-In Replacement Simplicity

No LED lighting or extra cabling is included, so the fan installs directly into existing 120mm mounts using the native 4-pin header. The black frame matches typical server aesthetics without requiring bracket adapters. Buyers needing RGB illumination or 3-pin voltage control should look elsewhere.

Highlights

  • 120 mm fan fits standard CPU cooler mounts
  • 4-wire PWM connector enables precise speed control
  • Dual ball bearing design extends operational lifespan
  • 18 W power rating delivers strong airflow performance
  • ebm-papst engineering ensures reliable cooling quality

Specifications

Model4112N/31HHA
ColorBlack
TypeFan only
Fan Size120mm
Bearing Type2 Ball
Power Connector4 Wires
LEDNo

Questions about this item

How do I connect the 4-wire PWM connector to my motherboard header?

Align the keyed 4-wire plug with the CPU fan header and press straight down; the fourth wire carries the PWM signal so speed control works automatically.

When will the dual ball bearings need replacement?

The 2-ball bearing design is rated for long life; listen for increased noise or vibration as the first sign that the fan should be swapped.

What thermal limit appears first during continuous 18 W operation?

Sustained 18 W draw heats the motor windings; the internal thermal cutoff will reduce speed before any component reaches its maximum temperature.

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