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Single 140mm red LED case fan with magnetic levitation bearing, square black frame 25mm thick, four-pin PWM connector visible

Corsair

Corsair ML140 PRO LED CO-9050047-WW 140mm case fan RED

SKU CH-G50T-TAVFT MPN CO-9050047-WW

140 mm magnetic-levitation PWM fan runs 400–2000 RPM for 20–97 CFM airflow at 16–37 dBA with red LED lighting

  • Fan Counts1 Fan
  • Fan ControllerNo Controller
  • TypeCase Fan
  • Fan Size140mm
  • Fan Thickness25mm
  • Bearing TypeMagnetic Levitation

LED Red

  • Magnetic levitation bearing cuts friction for quieter operation down to 16 dBA
  • Wide 400–2000 RPM range delivers up to 97 CFM airflow when needed
  • Red LED lighting adds visible accent inside the chassis
  • 140 mm frame moves more air at lower speeds than smaller fans
  • PWM 4-pin connector enables precise motherboard speed control

140 mm magnetic-levitation PWM fan

This 140 mm case fan uses magnetic-levitation bearings and a custom rotor to balance static pressure with airflow. A single four-pin PWM connector allows motherboard speed control from 400 to 2,000 RPM. Red LEDs provide illumination while the fan moves 20 to 97 CFM at 16 to 37 dBA. The 25 mm thick frame fits standard mounting points.

Builders who need quiet, adjustable cooling

The wide speed range suits systems that run silent at idle and ramp up under load, while the magnetic bearing reduces wear for long-term reliability. Users who require a bundled fan controller or multi-colour lighting should look at other models, as this unit includes neither a controller nor RGB LEDs. Builders with tight clearances under 25 mm will need a slimmer alternative.

Sustained-load acoustic and thermal behaviour

Under continuous load the fan can maintain its upper RPM limit, delivering 97 CFM while noise settles at the rated 37 dBA. Magnetic levitation eliminates physical contact, so bearing noise does not increase over time and performance remains consistent during extended sessions. The PWM curve lets the motherboard hold a steady speed rather than cycling, keeping temperatures stable without sudden acoustic spikes.

Highlights

  • Magnetic levitation bearing cuts friction for quieter operation down to 16 dBA
  • Wide 400–2000 RPM range delivers up to 97 CFM airflow when needed
  • Red LED lighting adds visible accent inside the chassis
  • 140 mm frame moves more air at lower speeds than smaller fans
  • PWM 4-pin connector enables precise motherboard speed control

Specifications

BrandCorsair
SeriesML140 PRO LED
ModelCO-9050047-WW
Fan Counts1 Fan
Fan ControllerNo Controller
TypeCase Fan
Fan Size140mm
Fan Thickness25mm
Bearing TypeMagnetic Levitation
RPM400 - 2,000 RPM
Air Flow20 – 97 CFM
Noise Level16 – 37 dBA
Power Connector4 Pin
LEDRed
FeaturesMagnetic Bearing: harnesses magnetic levitation technology to provide lower noise, higher performance, and a longer lifespan
Custom Rotor Design: delivers the perfect balance between high static pressure and high airflow, operating flawlessly in the most challenging environments
Extensive PWM Control Range: A 1,600 RPM PWM control range gives you total control between silence and absolute performance
Color Customization: Replaceable corners mounted to anti-vibration rubber dampers allow you to match your fans with the rest of your build (Available separately in Red, White, and Blue)
Dimensions140mm x 140mm x 25mm
Package ContentsML140 PRO LED, 140mm Premium Magnetic Levitation PWM Fan
Fan mounting screws
Shipping weight0.32 kg
Package size178 × 150 × 36 mm

Other versions of this model

1 more in the same range

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Questions about this item

Does this fan need a 4-pin PWM header on my motherboard?

Yes, it uses a 4-pin power connector for PWM speed control between 400 and 2000 RPM.

Will the 140mm frame and 25mm thickness fit my existing 140mm mounting points?

The fan measures 140mm x 140mm x 25mm, matching standard 140mm case or radiator mounts.

How can I confirm the magnetic levitation bearing is running correctly after installation?

At minimum speed the noise level is 16 dBA and airflow is 20 CFM; at maximum it reaches 37 dBA and 97 CFM.

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