This article covers be quiet! ケースファン LIGHT WINGS 140mm PWM Reverse 1.

Overview

be quiet! delivers one of the most refined 140mm case fans on the market with the LIGHT WINGS 140mm PWM Reverse BL134. This reverse-blade fan features 20 addressable RGB LEDs split between a subtle rear ring and a bright front ring, creating a stunning visual effect from every angle. With a maximum speed of 1,300 RPM and a noise ceiling of just 25.5 dB(A), it strikes an excellent balance between airflow and silence. A key differentiator is its optimized impeller geometry developed by be quiet! to reduce turbulence and maintain efficient cooling even at low speeds. The PWM (Pulse Width Modulation) control allows the motherboard to intelligently ramp the fan up or down based on system temperature, ensuring whisper-quiet operation during light loads and adequate cooling under stress. Positioned in the mid-to-high end of the case-fan market, the LIGHT WINGS Reverse targets builders who want both striking ARGB illumination and the legendary quietness be quiet! is known for. It fits perfectly in showcase PCs and silent gaming rigs that demand visual flair without sacrificing acoustic performance.

Compatibility Guide

The fan measures 140mm × 140mm × 25mm, fitting most standard 140mm fan mounts in modern PC cases. Power is delivered via a 4-pin PWM connector, compatible with virtually all modern motherboard fan headers. For ARGB control, a 3-pin (5V) addressable RGB header is required—older 12V/4-pin RGB headers will not work. If your motherboard lacks ARGB support, an external controller may be necessary. Reverse blade design means the airflow direction is opposite to standard fans. This model is intended for exhaust mounting (rear or top of the case), not intake. Verify your case's fan layout and intended airflow direction before purchasing.

Product Info

Released in 2024, the LIGHT WINGS 140mm PWM Reverse BL134 is available through major retailers like as a Japan authorized domestic product (国内正規代理店品). Pricing sits around ¥4,600 (tax included), with a manufacturer warranty of 3 years. Rated voltage is 12V with a power draw of just 3.8W, making it easy on system power budgets. This fan targets the mid-to-high market tier, adding premium ARGB illumination to be quiet!'s already excellent silent cooling DNA. It sits above the non-LED Pure Wings series in both features and price, while offering a niche reverse-blade airflow that complements specific build aesthetics.

Best Use Cases

Silent PC builders: For enthusiasts constructing near-silent gaming or media PCs, the 25.5 dB(A) maximum noise ensures the fan is barely audible even under load. PWM control keeps it nearly inaudible during idle/light tasks. ARGB showcase rigs: If you have a tempered-glass side panel, the dual-ring ARGB lighting (rear subtle + front bright) creates a layered visual effect. The reverse blade design also casts light differently compared to standard fans, adding unique depth. * Workstation users: Long rendering or compile sessions benefit from the fan's quiet operation and efficient cooling. The 1,300 RPM top speed is sufficient for moderate heat loads while maintaining a whisper-quiet environment.

Things to Consider

The most critical point: this is a reverse-blade fan, designed for exhaust (airflow out of the case). For intake positions (front panel), the standard LIGHT WINGS (forward rotation) model should be chosen instead. Confusing the two can compromise your case's cooling efficiency. ARGB lighting requires a 5V/3-pin header on the motherboard—older boards with only 12V/4-pin RGB headers are not compatible without a separate controller. Also, 140mm fans are larger than 120mm ones; verify your case clearly supports 140mm mounts before purchase. Competitors like Noctua NF-A14 offer slightly lower noise figures but lack RGB entirely. If you prioritize absolute silence over visuals, those may be better. However, the LIGHT WINGS Reverse offers a unique combination of ARGB and quiet that few rivals match at this price point. Finally, ensure you are buying the Japan authorized domestic version to get the full 3-year warranty coverage.

Product Disclosure (Amazon)

  • Manufacturer: be quiet!
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0H38JH1LK
  • Note: This article covers a manufacturer-made product based on Amazon listing details.