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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 size120 mm
  • Number of fans1 Fan
  • Fan depth25 mm
  • Bearing designMagnetic Dome
  • Rotational speed0, 420–2,100 RPM +/- 10%
  • Airflow rate13.3–72.8 CFM

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.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 63% of the 8,339 comparable items (median $19.99).
Fan size 120 mm
Typical for this category: the median of 1,114 items is 120 mm.

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Specifications

Product
Brand nameCorsair
Model nameCO-9050188-WW
Product typeCase Fan
Product colorBlack
Performance
Rotational speed0, 420–2,100 RPM +/- 10%
Airflow rate13.3–72.8 CFM
Air pressure rating0.2–4.15 mm-H2O
Size & build
Fan size120 mm
Number of fans1 Fan
Fan depth25 mm
Bearing designMagnetic Dome
Product dimensions120 mm × 120 mm × 25 mm
Shipping weight0.23 kg
Package size150 × 127 × 48 mm
Compatibility
Compatible withCase
In the box
In the box1x RS120 Fan
4x Mounting Screws
Environment & compliance
Operating noise10–36 dBA
More details
LED lightingNon-LED

Other versions of this model

5 more in the same range

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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