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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
be quiet! Silent Wings Pro 4 PWM Black Fan, 140mm, 2400RPM, 4-Pin PWM Fan Connector, Black Frame, Black Blades, Optimized Fan Blades for the Highest Performance for Radiators & Heat Sinks, 3 Mounting Options, 3 Speed SwitchSILENT WINGS PRO 4 140mm PWM LEGENDARY SILENCE, EPIC PERFORMANCE AND FEATURES Silent Wings Pro 4 140mm PWM is the most progressive, performant and versatile fan by be quiet! Optimized fan blades for the highest performance on radiators and heat sinks Speed switch allows changing maximum PWM speed between medium speed, high speed and ultra high speed (up to 2400 rpm) Small tip clearance and a fan frame with a funnel shaped air outlet for extremely high
SILENT WINGS PRO 4 - 140mm PWMLEGENDARY SILENCE, EPIC PERFORMANCE AND FEATURES
Silent Wings Pro 4 140mm PWM is the most progressive, performant and versatile fan by be quiet!
- Optimized fan blades for the highest performance on radiators and heat sinks
- Speed switch allows changing maximum PWM speed between medium-speed, high-speed and ultra-high-speed (up to 2400 rpm)
- Small tip clearance and a fan frame with a funnel-shaped air outlet for extremely high air pressure
- Virtually inaudible operation at regular speed
- 6-pole fan motor and fluid-dynamic bearing for less vibration and very smooth operations
- Individual mounting systems for use as a case fan or with a radiator
- 5-year manufacturer warranty
IMPROVED ON ALL LEVELS
Altered blade arrangement for new generation performance
The fan blades are what makes a fan. It is for this reason that the fan blades of Silent Wings Pro 4 140mm PWM have been developed newly from scratch. The new blade arrangement enables a performance second to none for all possible operations. Be it in a case, on radiators or heat sinks.
OPTIMIZED FOR HIGH-END PERFORMANCE
Minimum distance for maximum air pressure
Silent Wings Pro 4 140mm PWM makes for extraordinary air pressure and therefor, significantly increases the system’s performance. The decreased distance between the fan blades and the frame enables an extraordinarily high air pressure. By that, the Silent Wings Pro 4 140mm PWM allows the user to run even the most demanding applications.
SPEED SWITCH
3 speed options for any possible application
The speed switch makes switching between medium, high-speed and ultra-high-speed of maximum RPM levels quick and easy. The Silent Wings Pro 4 140mm PWM alters its application with a simple slide to the right. Medium-speed is suitable for any operation that requires regular cooling performance. High-speed lets the fan spin faster, providing more cooling power. Ultra-high-speed ultimately offers enough rpm to cool even the most demanding hardware in high-end PC builds.
6-POLE FAN MOTOR
The key for virtually inaudible operation when needed
6-pole fan motor with 3 phases for very low power consumption, less vibration and therefore quiet max. operation of 36.8dB(A). Equipped with this state-of-the-art technology the fan is virtually inaudible when operated in mid-speed.
3 DIFFERENT MOUNTING OPTIONS
For any purpose
Silent Wings Pro 4 140mm PWM has 3 mounting options in the scope of delivery. The pre-installed radiator corners are specially designed for radiators on which the incomparable performance of this high-end fan completely shines. On the other hand, for chassis use, the anti-vibration mounting is the first choice as they reduce vibrations to a minimum. The plastic mountings round up the scope.
FLUID-DYNAMIC BEARING
For a sustainable operation
The advanced fluid-dynamic bearing (FDB) enables a super long fan life of up to 300,000 hours. In addition, it reduces the vibrations significantly and supports the virtually inaudible operation of Silent Wings Pro 4 140mm PWM.
ELEGANT LOOK
Magnificent appearance in all details
The all-black design combined with a high-grade fan sticker makes Silent Wings Pro 4 140mm PWM a highlight in any system. The finely sleeved PWM cable perfectly rounds up the outer appearance of the fan. Not only does the PWM cable look great: its connector can also be plugged in and out with ease, making the fan an eye-catcher and user-friendly alike.
General Data
Model: Silent Wings Pro 4 140mm PWM
Dimensions (mm): 140
Color option: Black
Lighting: -
Fan speed @ 100% PWM / 12V (rpm): 2400
Noise level @ 100% PWM / 12V (dB(A)): 36.8
Air Flow @ 100% PWM / 12V (CFM / m3/h): 97.41 / 165.5
Air Pressure @ 100% PWM / 12V (mm H2O): 3.64
Mechanical Specifications
Dimensions (L x W x H), (mm): 140 x 140 x 25
Weight incl. fixed cables (g): 258
Bearing technology: FDB
Motor technology: 6-pole fan motor
Push pin fixing: Yes
Screw fixing: Yes
Cables / Connectors
Daisy chain for lighting signal: -
Lighting connector: -
Connector: 4-pin PWM
Cable length (mm): 500
Cable sleeve: Yes
Performance / Noise
Air Flow @ 100% PWM / 12V (CFM / m3/h): 97.41 / 165.5
Air Pressure @ 100% PWM / 12V (mm H2O): 3.64
Noise level @ 100% PWM / 12V (dB(A)): 36.8
Lifespan (h / 25°C): 300,000
Electrical Specifications
Rated Voltage DC (V): 12
Operating Voltage DC (V): 7 - 13.2
Current consumption (A): 0.50
Safety current (A): 0.50
Input power (W): 6.0
Rated Current LED (A): -
Accessories
3-pin to 4-pin 12V-connector: -
12V to 7V adapter: -
12V to 5V adapter: -
Screws: 4
Push pins: 4
hard plastic washer: -
Others: -
Safety Certification
Approvals: CE / RoHs / RU / UKCA / TUV / WEEE
Environmental Directives
RoHs: -
Triman: -
Logistics Data
Article number: BL099
Dimensions, package (L x W x H), (mm): 206.5 x 156 x 31
Gross weight, package (kg): 0.448
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Jewelry box that holds a lot.
Color: Pink, Size: 2 Layer
This jewelry box is so sturdy and holds A LOT of jewelry. Not only does it look gorgeous it’s actually functional and does its job ! I highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 22, 2025
★★★★★ 4
Perfect if you're anything like me
Color: White, Size: 2 Layer
I have about 20 small jewelry boxes sitting in my closet, stacked up high, threatening to topple over any time I reach over them to grab something else. I don't know what's in those boxes, except that it's jewelry I purchased and liked well enough to keep so that I could wear it again. But since all of the pieces are closed up inside, I almost never wear them because I don't want to dig through all 20 boxes to find the 1 thing I want when I'm already almost late to wherever I'm going.
If ANY of that sounds anything like you, you need this jewelry box. Is it the most premium thing you've ever seen? No, but does it have a lot of storage space for a pretty compact form factor and hold a ton of stuff? Yes, it totally does. And is the price super reasonable? Yes, it is. And if you kind of squint at it, and look through softer eyes, it doesn't really matter that yes, this is kind of cheaply constructed, and the dividers do move around a little bit because they're not anchored to the sides of the trays.
I was able to consolidate all of those jewelry boxes down into this one box, and I no longer need to hold my breath when I try to grab something over the top of the pile because I was able to throw. them. all. out! The satisfaction of purging my own personal leaning tower of Pisa was worth the price alone.
But onto the nitty gritty details: yes, the see-through part is acrylic and not glass. I'm okay with that because I don't need more breakable things sitting in my closet. Yes, the dividers aren't super stable. I'm okay with that because they work well enough and keep each piece where it belongs. Yes, it's pleather (aka "vegan leather"). I'm okay with that because I don't need cow hide to hold my jewelry to make it feel more precious, especially because most of my jewelry is pretty inexpensive stuff anyways. I don't notice any glaring cosmetic defects when looking at it, aside from the one very squiggly scratch in my acrylic top that doesn't bother me too much, but since it does mean that quality control may be a bit lacking, this gets a very solid 4 stars.
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Reviewed in the United States on November 5, 2025
★★★★★ 5
Elegant Jewelry Box
Color: Pink, Size: 2 Layer, Color: Pink, Size: 2 Layer
Very stylish and elegant jewelry box suitable for your jewelry needs. I needed something for my extensive jewelry collection. I use this for my everyday jewelry, and it works perfectly. I chose the two-tier jewelry box, and I love how sturdy it is. You can put a lot in the box without it being overcrowded. The blush color gives it a soft look, but also the compartments on the inside are soft as well. It is of good quality and a value for what you get.
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Reviewed in the United States on November 2, 2025
★★★★★ 4
Pretty jewelry box
Color: Pink, Size: 2 Layer, Color: Pink, Size: 2 Layer
I really like this jewelry box. It is a great size and can fit lots of pieces. The box is also chic and a beautiful pink color. It also seems to be well made. The only thing I don’t love about it is the lack of variety in the compartment size. The compartments are large or small squares, if there were long rectangular compartments they would be more ideal for necklaces. Overall this jewelry box works well and is worth the cost.
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Reviewed in the United States on November 7, 2025
★★★★★ 5
Nice jewelry box
Color: White, Size: 2 Layer, Color: White, Size: 2 Layer
This is a very nice jewelry box. It has two drawers with lots of compartments and can hold a lot of jewelry. I love that it is easy to see inside the compartments and will make it so easy to organize my jewelry. It doesn’t take up much space and looks great on the dresser. I highly recommend this jewelry box!
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Reviewed in the United States on October 20, 2025
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