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White 120mm square case fan with mirrored centre and addressable RGB side lighting

JONSBO

JONSBO FR-505B White Reversed 120mm ARGB Case Fan

SKU CH-T92C-ADS6T

120 mm white case fan with reversed blades, 5 V addressable RGB side lighting and PWM speed control from 800 to 1800 rpm

  • TypeCase Fan
  • ColorWhite
  • LEDAddressable RGB

Model Reversed

  • n/a
  • Reversed

Struck-through versions exist but are not stocked here.

  • Reversed blade design pulls cool air efficiently
  • Addressable RGB lighting with side illumination adds style
  • PWM control spans 800-1800 rpm for flexible cooling
  • Quiet operation at 13.3-30 dB(A) keeps noise low
  • 40000-hour MTTF rating supports long-term reliability

White 120 mm reversed fan

The JONSBO FR-505B is a white 120 mm case fan with a reversed blade design and addressable RGB lighting on the frame. It connects through a standard 4-pin PWM header for the motor and a 3-pin 5 V ARGB header for the LEDs. The mirror-style side lighting adds a uniform glow to builds that showcase internal components.

Upgrade from fixed-speed or single-colour fans

This unit replaces basic 3-pin or non-LED fans when you want PWM speed control between 800 and 1800 rpm and per-LED colour effects. The jump is worth it if your motherboard or controller supports 5 V ARGB and you need both airflow tuning and synchronised lighting without adding a separate hub.

Airflow and noise headroom

At full speed the fan moves 47.2 CFM with a static pressure of 1.6 mmH2O while peaking at 30 dB(A). At the low end it delivers 20.98 CFM at 13.3 dB(A), suitable for quiet idle states. The 40 000-hour MTTF rating indicates long-term reliability under continuous operation.

Highlights

  • Reversed blade design pulls cool air efficiently
  • Addressable RGB lighting with side illumination adds style
  • PWM control spans 800-1800 rpm for flexible cooling
  • Quiet operation at 13.3-30 dB(A) keeps noise low
  • 40000-hour MTTF rating supports long-term reliability

Specifications

TypeCase Fan
ColorWhite
LEDAddressable RGB

Questions about this item

Will the 120 mm by 120 mm by 25 mm frame fit my case's standard 120 mm mounts?

Yes, the fan uses the industry-standard 120 mm square footprint with 25 mm thickness, so it fits any case or radiator designed for 120 mm fans.

Which headers do the 4-pin PWM fan cable and 3-pin 5 V ARGB cable plug into on my motherboard?

Connect the 4-pin connector to a CPU_FAN or SYS_FAN header for PWM control, and the 3-pin 5 V plug to a 5 V ADD_HEADER or JRAINBOW header — do not use a 12 V RGB header.

What does the 40 000-hour MTTF rating mean for long-term use?

At 25 °C ambient temperature the motor is rated for 40 000 hours of continuous operation; after that point bearing wear may increase noise or reduce speed, requiring fan replacement.

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