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Black 120mm square case fan 25mm thick non-LED magnetic dome bearing

Corsair

Corsair RS120 PWM 120mm case fan CO-9050188-WW 25mm Magnetic Dome bearing

SKU CH-A5F9-7QPA8 MPN CO-9050188-WW

A 120 mm case fan with magnetic dome bearing, daisy-chain PWM control, 420 to 2100 RPM and 13.3 to 72.8 CFM airflow

  • Fan Counts1 Fan
  • TypeCase Fan
  • CompatibilityCase
  • Fan Size120mm
  • Fan Thickness25mm
  • Bearing TypeMagnetic Dome

Fan Size 120mm

Model RS120 Single Pack

  • Daisy-chain multiple fans through a single 4-pin PWM connector for simplified control
  • Zero RPM mode stops the fan completely at low loads for silent operation
  • Magnetic Dome bearing reduces friction and noise while extending fan lifespan
  • AirGuide anti-vortex vanes concentrate airflow toward hot components for targeted cooling
  • High static pressure of 4.15 mm-H2O pushes air effectively through radiators and heatsinks

Purpose & Audience

The Corsair RS120 PWM is a single 120 mm case fan built for PC builders who want straightforward cooling with minimal cable clutter. Its daisy-chain 4-pin PWM design lets several fans run from one motherboard header, simplifying internal wiring.

Fit & Alternatives

This unit suits systems that need concentrated airflow through radiators or dense heatsinks, thanks to 4.15 mm-H2O static pressure and AirGuide anti-vortex vanes. Buyers who want addressable RGB lighting or a multi-fan kit in the box should look elsewhere.

Deciding Spec

The Magnetic Dome bearing enables a 0 RPM mode and a 10 to 36 dBA acoustic range across a 420 to 2100 RPM span, delivering 13.3 to 72.8 CFM. That combination of near-silent idle and strong static pressure decides if this fan matches your thermal and noise targets.

Highlights

  • Daisy-chain multiple fans through a single 4-pin PWM connector for simplified control
  • Zero RPM mode stops the fan completely at low loads for silent operation
  • Magnetic Dome bearing reduces friction and noise while extending fan lifespan
  • AirGuide anti-vortex vanes concentrate airflow toward hot components for targeted cooling
  • High static pressure of 4.15 mm-H2O pushes air effectively through radiators and heatsinks

Specifications

BrandCorsair
ModelCO-9050188-WW
Fan Counts1 Fan
TypeCase Fan
CompatibilityCase
Fan Size120mm
Fan Thickness25mm
Bearing TypeMagnetic Dome
RPM0, 420 - 2100 RPM +/- 10%
Air Flow13.3 - 72.8 CFM
Air Pressure0.2 - 4.15 mm-H2O
Noise Level10 - 36 dBA
ColorBlack
LEDNon-LED
Dimensions120mm x 120mm x 25mm
Package Contents1x RS120 Fan
4x Mounting Screws
Shipping weight0.23 kg
Package size150 × 127 × 48 mm

Other versions of this model

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Questions about this item

How can I confirm the fan is running at the correct speed after connecting it to my motherboard?

In your BIOS or fan-control software, set a PWM duty cycle and verify the reported RPM falls between 420 and 2100 RPM ±10%; at 0 % duty the fan should stop completely thanks to Zero RPM mode.

What comes in the box and do I need any extra cables to daisy-chain multiple fans?

The package includes one RS120 fan and four mounting screws; each fan has a built-in 4-pin PWM daisy-chain connector, so no separate cables are required to link additional units.

Should I choose this 120 mm model or a different size for my radiator?

This fan is 120 mm × 25 mm and delivers up to 4.15 mm-H₂O static pressure, making it well suited for 120 mm radiators; select a different diameter only if your radiator or case mounts require another size.

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