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Product Overview

Noctua NF-A4x20 FLX 40mm x 20mm 3-pin Fan

After the success of Noctua's NF-A4x10 40mm fans, we are delighted to offer the 20mm wide version that offers increased static pressure performance.

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua's AAO frame, the NF-A4x20 is a highly optimized, premium-quality quiet fan in size 40 x 20mm. The FLX version provides 5000/4400/3700rpm speed settings via the supplied Low-Noise Adaptors and includes the OmniJoin™ Adaptor Set for easy connection to proprietary fan headers. Its superb running smoothness, reference-class SSO2 bearing, and Noctua's trusted premium quality make it an elite choice for the highest demands.

40x20mm size
Compared to Noctua's award-winning NF-A4x10, the NF-A4x20 is twice as thick, which allows for increased static pressure performance and makes the NF-A4x20 ideal for demanding applications with high flow resistance.

Flow Acceleration Channels
The NF-A4x20 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.

AAO Frame
Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.

Stepped Inlet Design
Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment, and increases suction capacity, especially in space-restricted environments.

Inner Surface Microstructures
With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.

Integrated Anti-Vibration Pads
Integrated Anti-Vibration Pads made from extra-soft silicone minimize the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks.

SSO2 bearing
The NF-A4x20 features the further optimized second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilization, precision, and durability.

Smooth Commutation Drive 2
The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the fan remarkably quiet even at very close distances.

3-speed settings for full flexibility
Providing 5000, 4400, and 3700 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-A4x20 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness.

OmniJoin adaptor set
Many devices featuring 40mm fans use proprietary fan headers, so the NF-A4x20 comes with Noctua's OmniJoin adaptor set. Just cut the original fan's cable, fix it to the adaptor using the supplied 3M Scotchlok connectors and you can plug the NF-A4x20 into proprietary fan headers!

Extensive cabling options
The fan's short 20cm primary cable minimizes cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and the supplied 3:4 pin adaptor allows the connection of the fan directly to the power supply.

Features

• 40 x 20mm quiet PC cooling fan
• Three-speed settings for full flexibility
• Feature packed
• Perfect for propitiatory cooling
• From 5.5 CFM, 14.9 dBA at 5000 RPM

Shipping & Returns – RMA

TECHMIMO promises to always deliver high quality products at competitive prices. Our mission is to gain 100% customer satisfaction. However, in rare cases if you aren't satisfied with any of our products received then you can apply for an RMA (Return Material Authorization) which is subject to our terms and conditions below. At the time of placing an order the purchaser is required and assumed to agree to these terms and conditions.

Definitions

“We” or “Us” or “Our” means TECHMIMO and any authorized person acting on behalf of TECHMIMO.

“You” or “Customer “can be one of the following:

A "Business Customer" which means a customer or consumer acting on behalf of an actively trading business entity.

A "Consumer" which means an individual generally the end-consumer who is not acting on behalf of a business entity.

Non-Faulty Items Returns Policy
  • We only accept RMA requests from you who originally purchased them and cannot accept return requests from a third party on your behalf.
  • You must inform us in writing within 14days after receiving the item(s) if you wish to return all or part of the original order that are considered non-faulty. Any RMA requests for non-faulty item(s) received after this period will not be considered.
  • We only accept returned items that are in-saleable condition.
  • Saleable condition is defined as meeting the same standards as newly manufactured/sourced products and still have manufacturer’s seal fully intact and are unopened and in the original packaging with all the instructions, warnings etc. TECHMIMO reserves the right to determine salability of a product.
  • You must inform us of any faulty items in writing within 14 days from the date of item(s) received by you. In case of incomplete or damaged products, we must be informed within seven (7) days of you receiving the item. In some cases, we may consider items returned after 14 days if it can be proven that the item(s) was/were faulty when delivered and did not develop fault due to customer misuse, not following manufacturer’s instructions or damaged by the customer.
  • In case of wrong power supply or voltage being used by the customer no return is acceptable.
  • In case of incomplete/damaged goods received by the customer, the sales team will try to replace the order, however, this is subject to further stock being available. We will try our best to rectify the problem within thirty (30) days. If the problem cannot be rectified within this time-frame, then customer will post the item(s) back to the address indicated on the RMA to claim any refunds. Proof of return postage must always be kept to certify return and ensure the correct claim for shipping cost can be made.
  • No re-stocking or shipping fees will be paid by the customer in case of a successful faulty/Incomplete/Damaged item return.
  • We will normally issue a full refund to the customer within 14 days from the date the item is received at our warehouse.
Fees – Non-Faulty Items:
  • TECHMIMO will impose a £30 on product value of £150, and on above £150 value product, 25% restocking will be applied, unless the return is proven to be due to an error on our part such as we shipped the wrong part etc.
  • If the initial payment for the order was made using a credit card then a 3% fee may also apply.
  • For international orders, all import charges and/or custom fees will be charged to you where these apply. These will be communicated to you (if applicable) after we receive the RMA request.
  • All return postage (a proof of postage must be obtained and is required by us to process any refunds) will be paid by the customer.
Subject to all of the above, we will issue any refund due to the customer within 14 days from the date the item is received at our warehouse.
    Faulty Items Returns Policy
    • We only accept RMA requests from you who originally purchased them and cannot accept returns from a third party on your behalf.
    • You must inform us of any faulty items in writing within 14 days from the date of item(s) received by you. In some cases, we may consider items returned after 14 days if it can be proven that the item(s) was/were faulty when delivered and did not develop fault due to customer misuse, not following manufacturer’s instructions or damaged by the customer.
    • Upon receiving RMA for faulty item(s), our technical team will investigate and offer help via phone and/or remote access to rectify any problems. However, if the fault remains and cannot be rectified then the customer would need to post the item(s) back to us (proof of postage must be obtained and is required by us to process any refunds).
    • In case of wrong power supply or voltage is used then no return is acceptable.
    • No fees will be paid by the customer in case of a successful faulty item return.
    • We will normally issue a full refund to the customer within 14 days from the date the item is received at our warehouse.
    Procedure for Returning Products

    Products that are returned to TECHMIMO require a Return Material Authorization (RMA) which can be requested from our Customer Service department or by emailing a written request to sales@techmimo.co.uk

    The following information will be required to issue the RMA:

    1. TECHMIMO invoice number & Customer P.O. number or Delivery reference number
    2. Date of purchase
    3. Part number / description / quantity (if items were purchased in pack quantities then only full pack quantities will be accepted for return)
    4. Reason for the return.
    Shipping returns to TECHMIMO with an RMA
    • Products authorized to be returned on the RMA will be need to be posted to the return address as indicated on the RMA.
    • TECHMIMO should receive returned product(s) within 14 days after issuing the RMA. Items received after this period will void the original RMA.
    • If we are organizing the transportation of the products to be returned, instructions will be provided by Customer Service to organize collection of the products to be returned by a carrier selected by us.

    Inspection of returns at TECHMIMO

    Unless faulty, only the returned item(s) received in salable condition, will be considered for return and credit. At arrival of the return products, we will determine whether returned products are in a sell able condition.

    Products received in a non-salable condition will be handled in one of the following ways:

    • Refurbishment of the products returned – TECHMIMO will determine refurbishment costs and inform Customer Service
    • Destruction with Customer approval, including any applicable scrapping charges.
    • Return of the product to the customer, including any applicable transportation charges

    40mm Noctua NF-A4x20 FLX Fan

    Noctua
    NF-A4x20 FLX
    Many in stock
    Components
    £20.29
    40mm Noctua NF-A4x20 FLX 40mm x 20mm 3-pin Fan
    £20.29

    Product is New

    Product Condition

    New
    A brand-new, unused, unopened and undamaged item in original retail packaging


    Used
    An item that has been previously used. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or an item that has been returned to the seller after a period of use. See the seller's listing for full details and description of any imperfections.

    Free Shipping

    Free standard shipping on orders over $99

    Estimated to be delivered on 12/01/2022 - 15/10/2022.

    Shipping

    We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

    When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

    Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

    40mm Noctua NF-A4x20 FLX Fan
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