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Black 120mm case fan with all-black frame and blades, 25mm thick, fluid dynamic bearing

be quiet!

be quiet! BL092 Silent Wings 4 120mm case fan

SKU CH-Q1Y7-9X4EF MPN BL092

A 120 mm case fan delivering 40-45 CFM airflow at 15-20 dBA with a fluid-dynamic bearing rated for 300000 hours

  • Fan size120 mm
  • Number of fans1 Fan
  • Fan controlNo Controller
  • Fan depth25 mm
  • Bearing designFluid Dynamic
  • Rotational speed<1,600 RPM

Model 120mm

Color Black

  • Virtually inaudible at 15-20 dBA noise level
  • High airflow of 40-45 CFM for effective cooling
  • Fluid-dynamic bearing reduces vibration for smooth operation
  • Up to 300,000 hours lifespan for long-term reliability
  • Anti-vibration mounting with push pins and screws included

Silent Wings 4 120mm case fan

The be quiet! Silent Wings 4 is a 120mm case fan built for silent operation and strong static pressure. Its fluid-dynamic bearing and six-pole motor keep vibration to a minimum while delivering up to 45 CFM of airflow. The all-black frame and premium sticker suit clean, professional builds.

Three-pin voltage control limits

The fan connects via a standard three-pin power connector, so speed is regulated by voltage rather than PWM. This means the motherboard or fan controller must support voltage-based adjustment to reach the full 1600 RPM range. Without voltage control the fan will run at a fixed speed, reducing flexibility for quiet or high-performance profiles.

Check mounting and header type

Verify your case or radiator accepts 120mm fans with a 25mm thickness and standard screw or push-pin holes. Confirm the motherboard or controller provides a three-pin header capable of voltage regulation if you want variable speed. Builds that require PWM control or a different connector will not match this fan.

How it compares

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

Price $19.99
Typical for this category: the median of 8,339 items is $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 namebe quiet!
Product lineSILENT WINGS 4
Product typeCase Fan
Product colorBlack
Performance
Rotational speed<1,600 RPM
Airflow rate40-45 CFM
Power
Power input connector3 Pin
Size & build
Fan size120 mm
Number of fans1 Fan
Fan depth25 mm
Bearing designFluid Dynamic
Shipping weight0.35 kg
Package size192 × 141 × 30 mm
Compatibility
Compatible withCase
Environment & compliance
Operating noise15–20 dBA
More details
Fan controlNo Controller

Other versions of this model

5 more in the same range

Questions about this item

Should I choose the 120mm size or a different fan diameter for my case?

This model is only offered in a 120mm diameter with 25mm thickness, so you need a case or radiator that accepts that exact footprint.

What does the 15 to 20 dBA noise range mean when the fan is running inside my PC?

At typical speeds the fan operates between 15 and 20 dBA, which is virtually inaudible in a closed case and stays quiet even under load.

The fan uses a 3-pin power connector — does that limit speed control compared to 4-pin PWM?

A 3-pin connector allows voltage-based speed control up to 1600 RPM, but it does not support PWM signalling for finer automatic curves.

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