Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO standard frame, the NF-A4x10 5V is a dedicated 5V version of Noctua’s highly optimised, premium quality quiet 40x10mm fan.
Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearing guarantee superb running smoothness and excellent long-term stability.
Topped off with modular cabling, the OmniJoin™ Adaptor Set and 6 years manufacturer’s warranty, the NF-A4x10 5V is a premium choice for demanding 5V applications

Caution:
Being a 5V fan, the NF-A4x10 5V can not be run at 12V and
will be damaged when used with typical 12V power sources such as
PC mainboard fan headers.

Installation
If you replace an existing 40mm fan with the NF-A4x10 in devices
such as storage or network solutions, it is usually best to use the
screws (or other mounting mechanism) used for the original fan.
When installing the NF-A4x10 as a case fan, you can either use the
supplied mounting screws or silicone anti-vibration mounts. In order
to install the fan using the silicone mounts, please first pull the silicone mounts through the mounting holes of the case.

Details

5V version

5V version
Many devices such as network or storage solutions use 5 volt 40mm fans.
With the same operating voltage and the included OmniJoin™ adaptor set that makes it compatible with proprietary fan headers, the NF-A4x10 5V is ideal for replacing noisy or broken 5V 40mm fans.

Flow Acceleration Channels

Flow Acceleration Channels
The NF-A4x10 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.

Reduced motor hub size

Reduced motor hub size
Thanks to its streamlined, compact motor design, the NF-A4x10's motor hub is smaller than with conventional 4cm fans.
This allows for more blade surface area and thus contributes to the NF-A4x10's superior airflow and pressure performance.

AAO frame

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

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

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

Smooth Commutation Drive 2

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 NF-A4x10 remarkably quiet even at very close distances.

SSO2 Bearing

SSO2 Bearing
The NF-A4x10 features the further optimised 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 stabilisation, precision and durability.

3 to 2-pin Adaptor and Polarity Protection

3 to 2-pin Adaptor and Polarity Protection
The NF-A4x10 comes with an adaptor from 3-pin Molex to the 2-pin connectors used on many graphics cards or network and storage devices.
An integrated diode provides polarity protection on 2-pin connections.

OmniJoin™ Adaptor Set

OmniJoin™ Adaptor Set
Many devices featuring 40mm fans use proprietary fan headers, so the NF-A4x10 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-A4x10 to proprietary fan headers!

Extensive cabling options

Extensive cabling options
The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary.
Both cables are fully sleeved.

6-year manufacturer’s warranty

6-year manufacturer’s warranty
Noctua fans are renowned for their impeccable quality and outstanding longevity.
Like all Noctua fans, the NF-A4x10 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturer’s warranty.

Size	40x40x10 mm
Mounting hole spacing	32x32 mm
Connector	3-Pin
Bearing	SSO2
Blade Geometry	A-Series with Flow Acceleration Channels
Frame Technology	AAO (Advanced Acoustic Optimisation)
Rotational Speed (+/- 10%)	4500 RPM
Airflow	8,2 m³/h
Acoustical Noise	17,9 dB(A)
Static Pressure	1,78 mm H₂O
Max. Input Power	0,25 W
Max. Input Current	0,05 A
Voltage	5 V
MTTF	> 150.000 h
Scope of Delivery	3:2 Pin Adaptor OmniJoin Adaptor Set 30cm Extension Cable 4 Vibration-Compensators 4 Fan Screws
Warranty	6 years

40x40x10mm axial fan, 4500rpm, 3 pin, runs at 5V
Featuring advance aerodynamic design measures, delivers high airflow at low noise
Integrated Anti-Vibration Pads, 3 to 2 pin adapter included, OmniJoin Adapter Set for easy instalation in case connector calbes are hardwired, 30cm extension cable included
Long life time, due to SSO2 bearing and smooth commutation Drive 2. 6 years manufactures warranty

Note:
Do not connect to a 12V output connector.
This fan is rated at 5V, so connecting it to a 12V connector will damage the fan.
Please note that fan connectors for general PC motherboards have 12V specifications.

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