How can I use this fan with a 2 pin connection. I’ve just received it only to find my connection is 2 pin. Doh!

Black is (-), red is (+) and yellow is just the probe. You disconnect/cut the yellow one and you have two active wires.

You replaced Hikvision nvr fan with Noc 40x20. What voltage did u use 12 or 5?

This Noctua fan is rated 5V and this is the voltage to use.

has anyone tried this in a dan a4 case as a top fan? And would it be worth doing?

I don't know where it would fit at the top of the A4, as the riser cables and psu cable take up the space, there might just be enough space on the GPU side. I have this fan zip-tied to the CPU side panel.

Good day, when will this item be back in stock again?

it is https://www.amazon.co.uk/gp/offer-listing/B009NQLT0M/ref=dp_olp_new_mbc?ie=UTF8&condition=new

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Noctua NF-A4x20 FLX, High-Performance Quiet Fan 40mm

Noctua NF-A4x20 FLX, High-Performance Quiet Fan 40mm

Product ID: 51055764

Details

Brand
Noctua
Compatible devices
Desktop
Cooling method
Air
Global Trade Identification Number
Maximum rotational speed
5000 RPM
Noise level
14.9 Decibels

⏳>150,000 hours MTTF reliability

🌀5000 RPM max speed

🔇Ultra-quiet 14.9 dB(A)

E£ 2999

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Description

🌀 Quiet power in a compact form – cool smarter, not louder!

BUILT TO LAST - Over 150,000 hours mean-time-to-failure backed by a 6-year manufacturer warranty for peace of mind.
COMPACT POWERHOUSE - 40x40x20mm size fits seamlessly into 1U servers, NAS, routers, and DVRs without compromise.
VIBRATION FREE OPERATION - Includes anti-vibration mounts and OmniJoin adaptor for smooth, stable performance.
PRECISION AIRFLOW CONTROL - 3-speed FLX settings let you dial in perfect cooling or whisper-quiet silence.
AWARD WINNING AERODYNAMIC DESIGN - Flow Acceleration Channels and Acoustic Optimisation frame deliver superior quiet cooling.

The Noctua NF-A4x20 FLX is a premium 40mm high-performance fan engineered for ultra-quiet, reliable cooling in compact 1U devices and network equipment. Featuring a 3-speed FLX control, advanced aerodynamic design, and anti-vibration accessories, it delivers up to 5000 RPM airflow at a whisper-quiet 14.9 dB(A) noise level. With over 150,000 hours MTTF and a 6-year warranty, it’s the trusted choice for professionals demanding silent, efficient thermal management.

Specifications

ASIN	B071J8CZP9
Best Sellers Rank	4,215 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 44 in Thermal Management Products 104 in Fans & Cooling
Brand	Noctua
Compatible Devices	Desktop
Cooling Method	Air
Country Of Origin	China
Customer Reviews	4.8 4.8 out of 5 stars (2,606)
Global Trade Identification Number	09010018100112
Item Dimensions L x W x H	40L x 40W x 20H millimetres
Item Weight	20 Grams
Manufacturer	Noctua
Manufacturer Part Number	NF-A4x20 FLX
Max Rotational Speed	5000 RPM
Model Number	NF-A4x20 FLX
Noise Level	14.9 Decibels
Number of Items	1
Number of Packs	1
Power Connector Type	3-Pin
Product Warranty	6 year manufacturer’s warranty
Unit Count	1.0 count
Voltage	12 Volts

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Excellent communication throughout the order process. Product is perfect.

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E£ 2999

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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