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Black 120mm square PWM case fan with mirror finish and addressable RGB side lighting

Corn Electronics

Corn Electronics FR-505B 120mm PWM ARGB Case Fan

SKU CH-NK8T-H16RK

A 120 mm PWM case fan with addressable RGB lighting, delivering 20.98–47.2 CFM at 800–1800 rpm and 13.3–30 dB(A)

  • TypeCase Fan
  • ColorBlack
  • LEDAddressable RGB

Model n/a

  • PWM control adjusts speed from 800 to 1800 rpm
  • 5 V addressable RGB lighting with mirror side glow
  • Airflow reaches 47.2 CFM at 1.6 mmH₂O static pressure
  • Quiet operation down to 13.3 dB(A) at low speed
  • Rated 40000 hours MTTF at 25 °C ambient

FR-505B 120mm PWM ARGB fan

The Corn Electronics FR-505B is a 120mm case fan built for standard mounting points. It targets builders who want addressable RGB lighting and PWM speed control in a single unit. The 25mm frame fits typical chassis and radiator slots.

Mirror frame with side ARGB lighting

A mirror-design frame and side-mounted LEDs spread light across adjacent components. The 5V 3-pin ARGB header connects to compatible motherboards or controllers for synchronised effects. A separate 4-pin PWM fan header handles speed regulation independently.

Airflow range of 20.98 to 47.2 CFM

At 800 to 1800 rpm the fan delivers 20.98 to 47.2 CFM with static pressure of 0.32 to 1.6 mmH2O. Noise stays between 13.3 and 30 dB(A). The 40000-hour MTTF rating indicates long-term operation at 25°C ambient. Not suited for builds needing higher static pressure or airflow beyond these figures.

Highlights

  • PWM control adjusts speed from 800 to 1800 rpm
  • 5 V addressable RGB lighting with mirror side glow
  • Airflow reaches 47.2 CFM at 1.6 mmH₂O static pressure
  • Quiet operation down to 13.3 dB(A) at low speed
  • Rated 40000 hours MTTF at 25 °C ambient

Specifications

TypeCase Fan
ColorBlack
LEDAddressable RGB

Other versions of this model

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Questions about this item

How long is the FR-505B rated to run before the bearing wears out?

The manufacturer rates the FR-505B at 40000 hours MTTF at 25 °C ambient.

At full 1800 rpm what limits the FR-505B first — airflow or static pressure?

At 1800 rpm the fan delivers 47.2 CFM airflow and 1.6 mmH₂O static pressure; the lower static pressure typically becomes the bottleneck in restrictive radiators or dense mesh.

How loud and how much power does the FR-505B draw when running all day at maximum speed?

At 1800 rpm the fan reaches 30 dB(A) and draws 3 W for the motor plus 6.5 W for the 5 V ARGB LEDs.

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