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Case Fans
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  2. Electronics
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  4. Computer Components
  5. Internal Components
  6. Fans & Cooling
  7. Case Fans
  8. Noctua NF-A4x20 5V…
Noctua

Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2

Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2 - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹6,170₹9,780

You save ₹3,610 (37%)

Qty
Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2 — Brown / 40x20mm
Brown / 40x20mm
₹3,090
₹4,710
In Stock
Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2 — beige / brown
beige / brown
₹3,090
₹4,850
Sold Out
Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2 — Pack of 2
Pack of 2
₹6,170
₹9,780
In Stock

Estimated doorstep delivery by 23 Nov - 25 Nov from USA

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Sourced from US retailers
Sourced from US retailers
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14-Day Smile Guarantee

Premium Quiet Cooling at Competitive Price

About this item

Noctua NF-A4x20 5V PWM is a 40x20mm fan designed for quiet, efficient cooling of electronics. Its award-winning A-series design features Flow Acceleration Channels and Acoustic Optimisation for superior noise reduction. Ideal for NVIDIA Jetson Nano, 1U servers, routers, switches, NAS, and DVRs, this fan operates at a maximum 5000 RPM with a noise level of just 14.9 dB(A). Crafted from fibre-glass reinforced PBT, it ensures durability and long life (>150,000 hours MTTF). Includes anti-vibration mounts, screws, extension cable, and OmniJoin adaptor for easy installation. Factory-sealed, imported from USA, with all duties paid, arriving in 11-13 days.

Reviewers highlight its near-silent operation even at high RPM, making it suitable for noise-sensitive environments. Its compact size fits in tight spaces like NVIDIA Jetson Nano and 1U chassis, providing reliable cooling without noise pollution. Perfect for Indian electronics enthusiasts seeking premium quality fans with minimal noise and maximum durability.

In India, this fan offers a high-quality alternative to local noisy or less durable options. Delivered via ExpressBox, it arrives quickly, with all duties included, ensuring hassle-free import. Ideal for tech setups requiring silent operation and long-term reliability.

Key Features

  • The information below is per-pack only
  • Premium quiet fan, 40x40x20 mm, 5V, 4-pin PWM, max. 5000 RPM, max. 14.9 dB(A), >150,000 h MTTF
  • Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 40x20mm size ideal for NVIDIA Jetson Nano, 1U applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
  • 5V 4-pin PWM version (5000rpm maximum speed) for 5V applications with PWM control
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers

Why choose this product

Advanced Acoustic Design

Noctua's award-winning A-series fans feature Flow Acceleration Channels and Acoustic Optimisation for superior quiet cooling, reducing noise by over 50% compared to standard fans. Made from fibre-glass reinforced PBT, it withstands harsh conditions and ensures long-term performance.

Ideal for Sensitive Electronics

Designed for 5V applications, this fan supports PWM control for precise speed adjustment. Perfect for NVIDIA Jetson Nano, network equipment, DVRs, and other devices in India, where quiet, reliable cooling is essential. Skip if you need high airflow at higher noise levels.

How to use

  • Connect the fan to 5V PWM header — Ensure your device has a 4-pin PWM connector. Attach the fan using included screws and anti-vibration mounts for secure installation.
  • Configure PWM control — Use your device's BIOS or software to set fan speed. The fan supports PWM for precise, quiet operation at various loads.
  • Verify operation — Check for smooth, silent operation. Clean the fan periodically to maintain optimal airflow and noise levels.

Example scenarios

Typical situations where Noctua NF-A4x20 5V PWM Fan (40x20mm helps — illustrative scenarios, not customer reviews.

1
Scenario 1
Illustrative example
Where it helps

Rajesh, 35, Mumbai, needs quiet cooling for his NAS server to avoid noise disturbance.

How this product helps

Installed Noctua NF-A4x20, which operates silently at 14.9 dB(A), lasting over 150,000 hours, arriving in 11-13 days with duties paid.

Technical specifications

Setup & usage

Recommended UseElectronics cooling, network equipment, DVRs
Maximum RPM5000 rpm
Noise Level14.9 dB(A)
Reapplication TimeOver 150,000 hours MTBF
Shelf LifeFactory-sealed, check manufacturer's date
Cost per use₹3,085 per fan
Compatibility5V PWM headers

Warranty

CrowCrowCrow helps you bring this product to India. Any warranty is offered by Noctuaunder its own policy.

Read more

How we compare

FeatureNoctua NF-A4x20 5VOthers
Noise Level14.9 dB(A), ultra-quiet operationTypically 20-30 dB(A), noisier in quiet environments
MTTF (Hours)Over 150,000 hoursUsually 20,000-50,000 hours, less durable
Size & Compatibility40x20mm, supports 5V PWM headersVaries, often non-PWM, larger sizes
Price per Unit₹3,085 per fan₹300-₹500 for local fans, lower quality

Product details

SKUfwc1172
BrandNoctua
Size40x20mm
ColorBrown
MaterialFibre-glass reinforced PBT
Voltage5V

About Noctua

Noctua is a renowned Austrian brand known for premium, quiet cooling solutions with over a decade of innovation in electronics cooling.

Compliance & Legal

This is a dietary supplement; not intended to diagnose, treat, cure or prevent any disease.

Customer Reviews

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FAQ, See What Others Asked

Is the Noctua NF-A4x20 5V PWM fan safe for electronics in India?
Yes, Noctua NF-A4x20 5V PWM is a high-quality fan designed for safe operation in electronics. It is imported from USA, factory-sealed, with all duties paid, ensuring reliable and safe cooling for your devices in India.
How to choose the right fan for my electronics?
Check the size (40x20mm), voltage (5V), and connector type (4-pin PWM). Noctua's fan supports PWM control, suitable for quiet, efficient cooling in network, DVR, and embedded applications.
Can I use this fan in India with 220V power?
Yes, this fan operates at 5V DC, compatible with standard 5V power supplies via USB or proprietary headers. It does not require voltage conversion, just proper connection.
What is the warranty for this fan?
Noctua offers a 6-year manufacturer’s warranty on this fan, ensuring long-term durability and support for your electronics cooling needs.
How does this fan compare to local Indian fans?
This fan provides superior noise reduction, longer MTBF (>150,000 hours), and imported quality. Local fans often lack such durability and quiet operation, making it ideal for sensitive electronics.
How to buy an original Noctua fan in India?
Purchase from authorized US retailers via crowcrowcrow, ensuring factory-sealed, genuine product with all duties paid. Delivery arrives in 11-13 days via ExpressBox, with a 14-day Smile Guarantee.

Frequently bought together

Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2

This item:

Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2

₹6,170

Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2

This item

Noctua NF-A4x20 5V PWM Fan (40x20mm, Brown) | Premium Quiet 4-Pin, 5V Version, Pack of 2

₹6,170

Total price:

₹12,710

You save ₹5,420 (30%) Extra

3 items selected

3 items

₹12,710

You save ₹5,420 (30%) Extra

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Spec
Price
₹6,170
₹9,780
₹3,830
₹5,430
₹2,710
₹2,920
₹6,580
₹6,800
₹4,840
₹7,300
₹6,190
₹8,210
₹1,060
₹1,450
Brand NameNoctuaCorsairCorsairCorsairCorsairSharpieASCENY
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹6,170₹9,780

You Save ₹3,610

Estimated doorstep delivery by 23 Nov - 25 Nov from USA
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Your Order Journey: From Purchase to Doorstep

You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you
You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you

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vs
₹18,510+ (3× the price)
₹6,170 locked, all-in
Hard to get the original US version in India
Original US version, shipped to your door
Extra pay for Import Duties, GST, and forex fees
One price in INR, no customs charges at delivery
4–12 weeks · No tracking
11-13 days · live tracking
Grey market, no guarantee, no protection, no refund
Sourced from US retailers, India-verified, return available
Lost in transit = ₹0 back
Full protection included