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Small black 40mm square fan with three-pin connector

OEM Industries

OEM Industries MF40F-12L 40mm 12V CPU cooler

SKU CH-TGN5-GK2F4

A 40 mm ball-bearing fan with a 3-pin 12 V connector for compact CPU or router cooling

  • ColorBlack
  • TypeFan only
  • Fan Size40mm
  • Bearing TypeBall
  • Power Connector3 Pin
  • LEDNo
  • Compact 40 mm footprint fits tight builds
  • 12 V 0.04 A draw keeps power use low
  • Three-pin connector enables speed monitoring
  • Ball bearing design extends operating life
  • Fan-only unit suits custom cooling projects

Compact 40 mm CPU cooler

The OEM Industries MF40F-12L is a 40 mm square fan designed to fit tight spaces in small-form-factor PCs, routers or switches. It operates on 12 V power and draws 0.04 A through a standard three-pin connector. Ball-bearing construction provides reliable rotation for continuous duty. The black frame blends into most builds without adding illumination.

Critical fit dimension

The single specification that decides compatibility is the 10 mm thickness combined with the 40 mm frame. Measure the available clearance in your chassis or device before ordering; a thicker or larger fan will not install. The three-pin header supplies power and tachometer feedback but does not support PWM speed control.

Suitable for space-constrained builds

This cooler suits builders who need a low-profile 40 mm replacement for OEM coolers in compact servers, network appliances or mini-ITX boards. It is not for users who require higher airflow, PWM regulation or a larger mounting footprint. Buyers needing greater cooling capacity should consider larger-frame alternatives.

Puntos fuertes

  • Compact 40 mm footprint fits tight builds
  • 12 V 0.04 A draw keeps power use low
  • Three-pin connector enables speed monitoring
  • Ball bearing design extends operating life
  • Fan-only unit suits custom cooling projects

Especificaciones

ModelMF40F-12L
ColorBlack
TypeFan only
Fan Size40mm
Bearing TypeBall
Power Connector3 Pin
LEDNo

Preguntas sobre este artículo

What does the 12 V rating mean when the fan is installed in a system?

The fan runs directly from a 12 V motherboard or controller header, drawing 0.04 A at that voltage.

What does the 3-pin connector limit for speed control?

It provides a tachometer signal but no PWM line, so speed can only be adjusted by varying the supply voltage.

What clearances are needed to mount the 40 mm by 10 mm frame?

The unit requires a 40 mm square opening and 10 mm depth for the fan body.

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