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Square 92mm case fan with white frame and blue blades, four-pin PWM connector, 25mm thick

Silverstone

Silverstone FQ91 92mm case fan 1000-2500rpm 4-pin

SKU CH-D1HD-DS1CF MPN FQ91

92 mm case fan with PWM speed control from 1000 to 2500 rpm, delivering 19.8 to 44.2 CFM at 14.7 to 24.8 dBA

  • TypeCase Fan
  • CompatibilityCase
  • Fan Size92mm
  • Bearing TypeP.C.F. bearing (Powder Copper Fluid Bearing)
  • RPM1000 ~ 2500rpm
  • Air Flow19.8~44.2CFM
  • Precise speed control via 4-pin PWM from 1000 to 2500rpm
  • Quiet operation at 14.7 to 24.8dBA across the speed range
  • Strong airflow delivery of 19.8 to 44.2CFM for effective cooling
  • P.C.F. bearing design reduces friction for longer service life
  • Anti-vibration rubber pads included to dampen mounting noise

92mm PWM case fan with P.C.F. bearing

The SilverStone FQ91 is a 92mm case fan built around a Powder Copper Fluid bearing. It spins between 1000 and 2500rpm via a 4-pin PWM connector so the motherboard can control speed automatically. Blue blades and a white frame give it a distinctive look inside the chassis.

Suits compact cases needing 92mm mounting points

This fan fits builds that rely on 92mm fan locations and want PWM speed control with low noise down to 14.7dBA. Anti-vibration rubber pads are included for extra dampening. Builders who need a different mounting pattern or higher maximum airflow should look elsewhere.

92mm frame with 25mm thickness

The unit measures 92 by 92 by 25mm, so it only fits cases and coolers designed for that exact 92mm square footprint and 25mm depth. Verify the mounting holes and clearance before purchase.

Points forts

  • Precise speed control via 4-pin PWM from 1000 to 2500rpm
  • Quiet operation at 14.7 to 24.8dBA across the speed range
  • Strong airflow delivery of 19.8 to 44.2CFM for effective cooling
  • P.C.F. bearing design reduces friction for longer service life
  • Anti-vibration rubber pads included to dampen mounting noise

Caractéristiques

BrandSilverStone
ModelFQ91
TypeCase Fan
CompatibilityCase
Fan Size92mm
Bearing TypeP.C.F. bearing (Powder Copper Fluid Bearing)
RPM1000 ~ 2500rpm
Air Flow19.8~44.2CFM
Noise Level14.7 ~ 24.8dBA , 15.3dBA@7V
Power Connector4 Pin
ColorBlue blade, white frame
FeaturesPWM design allows 1000~2500rpm fan speed control by motherboard
Optimum airflow, pressure and extremely silent performance
Innovative blade design focuses airflow with maximum efficiency
Air-inlet with optimized aerodynamic design reduces noisy air turbulence
Anti-vibration rubber pads included for additional noise dampening
Dimensions92 x 92 x 25mm
Poids d’expédition0.15 kg
Dimensions du colis230 × 187 × 62 mm

Questions sur cet article

Will the 92mm frame and 4-pin connector fit the same mounting holes and header as my older 92mm 3-pin fan?

Yes, the 92 x 92 x 25mm dimensions match standard 92mm mounts and the 4-pin PWM connector is backward-compatible with 3-pin headers; the fan will run at full speed if the motherboard does not send a PWM signal.

How can I confirm the P.C.F. bearing is running within the 14.7 to 24.8 dBA range after installation?

Use motherboard fan-tuning software or a hardware monitor to set a target RPM, then measure acoustic output at 1 m distance; the fan should stay near 15.3 dBA at 7 V and not exceed 24.8 dBA at 2500 rpm.

Are the anti-vibration rubber pads included in the box or must I buy them separately?

Anti-vibration rubber pads are included; no separate purchase is required for vibration damping.

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