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Black 92mm slim case fan, 15.2mm thick, non-LED, four-pin PWM, rubber corner pads

Silverstone Technology

Silverstone Technology AS90B 92mm 15.2mm case fan

SKU CH-9FZ4-WV7F2 MPN AS90B

A 92 mm slim case fan 15.2 mm thick with 11 blades, hydraulic bearing, PWM speed control from 500 to 2,500 RPM, airflow of 5.38 to 45.73 CFM and noise of 11.3 to 32 dBA

  • Fan size90 mm
  • Number of fans1 Fan
  • Fan depth15 mm
  • Bearing designHydraulic
  • Rotational speed500 to 2,500 RPM
  • Airflow rate5.38 to 45.73 CFM
  • Slim 15.2 mm profile fits space-limited builds
  • 92 mm fan delivers up to 45.73 CFM airflow
  • PWM speed range 500 to 2500 RPM for flexible control
  • Hydraulic bearing runs as quiet as 11.3 dBA
  • Integrated rubber pads reduce vibrational noise

Slim 92 mm fan for tight builds

The Silverstone Air Slimmer AS90B is a 92 mm case fan only 15.2 mm thick, designed for compact chassis or heatsink clearance where standard 25 mm fans will not fit. Its hydraulic bearing and eleven blades target both airflow and static pressure for restricted spaces.

PWM range limits low-end airflow

Speed is controlled via a 4-pin PWM connector across a 500 to 2,500 RPM range, delivering 5.38 to 45.73 CFM with noise from 11.3 to 32 dBA. At the minimum RPM the airflow may be insufficient for components that need constant pressure, so the curve must be tuned for the thermal load.

Rubber pads and non-LED black frame

Integrated rubber padding on the mounting corners dampens vibration transmitted to the case or heatsink. The all-black, non-LED frame keeps the appearance neutral for windowed or stealth builds, while the slim profile eases cable routing in dense layouts.

How it compares

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

Price $17.99
Cheaper than about 57% of the 8,339 comparable items (median $19.99).
Fan size 90 mm
Lower than about 70% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Brand nameSilverStone
Product lineAir Slimmer
Product typeCase Fan
Product colorBlack
Performance
Rotational speed500 to 2,500 RPM
Airflow rate5.38 to 45.73 CFM
Power
Power input connector4 Pin
Size & build
Fan size90 mm
Number of fans1 Fan
Fan depth15 mm
Bearing designHydraulic
Shipping weight2.27 kg
Package size127 × 127 × 127 mm
Environment & compliance
Operating noise11.3 to 32 dBA
More details
LED lightingNon-LED

Questions about this item

Should I pick the 92 mm slim version or a standard 25 mm fan?

The AS90B is 15.2 mm thick, so it fits tight heatsink clearances where a 25 mm fan cannot.

What does the 45.73 CFM peak mean for my CPU temps?

At 2500 RPM the fan moves 45.73 CFM, giving strong airflow through dense fins while staying at 32 dBA.

Does the 4-pin PWM header let the motherboard control the full 500 to 2500 RPM range?

Yes, the 4-pin connector enables PWM control across the entire 500~2500 RPM span.

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