NF-A9 PWM 5V 2200RPM 92mm Premium Quality Fan $ 19.12 30 in stock	Add to Basket
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Noctua NF-A9 PWM 5V 2200RPM 92mm Premium Quality Fan

Noctua’s NF-A9 92mm fans have been updated to feature Noctua’s latest innovative technology. The NF-A9 offers automatic fan speed control, an OmniJoin adaptor set and 6-year manufacturer’s warranty.

Features

5V 4-pin PWM version with USB power adapter
Sound-optimised blade geometry and profile (Flow Acceleration Channels)
Self-stabilising oil-pressure bearing (SSO2 Bearing)
46.4 CFM maximum airflow
Includes 4 Vibration-Compensators
Six years warranty

The NF-A9 5V PWM is a PWM-enabled 5V variant of Noctua’ award-winning, premium-quality NF-A9 92mm fan. Featuring an AAO (Advanced Acoustic Optimisation) standard frame and sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A9 is renowned for its superior performance and outstanding quietness of operation. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearing guarantee superb running smoothness and excellent long-term stability. Topped off with the included USB power adaptor cable, OmniJoin adaptor set and 6-year manufacturer’s warranty, the NF-A9 5V PWM is a premium choice for demanding 5V applications that require PWM control.

PLEASE NOTE: Being a 5V fan, the NF-A9 5V cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

5V PWM version

5V PWM fans are used in various devices and applications. With the included USB power adaptor cable and OmniJoin adaptor set, the NF-A9 5V PWM is a proven premium solution that gives you full flexibility both for replacing existing 5V PWM fans and for new, custom applications that require PWM speed control.

Award-winning NF-A9 design

Having received more than 100 awards and recommendations from the international press, Noctua’s NF-A9 has become a proven premium choice for 92mm cooling needs. Its renowned efficiency has convinced tens of thousands of customers all over the world.

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 minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.

Custom-designed PWM IC with SCD

Supporting fully automatic PWM speed control, the NF-A9 5V PWM uses Noctua’s novel, custom-designed NE-FD3 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses, SCD suppresses PWM switching noises and thus makes the fan quieter at low speeds.

Polarity protection

As many devices using 5V fans feature proprietary connectors, and documentation of the pin alignment may not be available, the fan features an integrated diode for polarity protection. This way, you’re on the safe side if you accidentally connect it with reverse polarity.

SSO2 Bearing

The NF-A9 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.

OmniJoin Adaptor Set

Many devices featuring 5V fans use proprietary fan headers, so the NF-A9 5V PWM 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-A9 5V PWM to proprietary fan headers!

USB power adaptor cable

The fan includes a USB power adaptor cable that allows it to run on power banks, devices with USB host ports or USB power supplies such as those used for smartphones, giving you near endless possibilities for using the fan in your home, in your car or wherever a need for cooling occurs!

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

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A9 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturer’s warranty.

Specifications	NF-A9 PWM 5V
Size	92x92x25 mm
Fan Connector	4-pin PWM
Bearing	SSO2-Bearing
Blade Geometry	A-Series with Flow Acceleration Channels
Rotational Speed (±10%)	2000 RPM
Min. Rotational Speed (±20%)	450 RPM
Airflow	46.4 CFM
Acoustical Noise	22.8 dB(A)
Static Pressure	2.28 mm H2O
Input Power	1.3 W
Input Current	0.26 A
Voltage	5 V
MTTF	150,000 h
Accessories	L30cm extension cable, , NA-AV1 anti-vibration mounts, USB power adaptor cable, OmniJoin adaptor set, Fan screws
Warranty	24 months
EAN barcode	9010018100297

Specifications	NF-A9 PWM 5V
Size	92x92x25 mm
Fan Connector	4-pin PWM
Bearing	SSO2-Bearing
Blade Geometry	A-Series with Flow Acceleration Channels
Rotational Speed (±10%)	2000 RPM
Min. Rotational Speed (±20%)	450 RPM
Airflow	46.4 CFM
Acoustical Noise	22.8 dB(A)
Static Pressure	2.28 mm H2O
Input Power	1.3 W
Input Current	0.26 A
Voltage	5 V
MTTF	150,000 h
Accessories	L30cm extension cable, , NA-AV1 anti-vibration mounts, USB power adaptor cable, OmniJoin adaptor set, Fan screws
Warranty	24 months
EAN barcode	9010018100297

Product Resources

Noctua website

FAQ

How do I measure fan size?
The size of fan you need will generally be determined by the size of the fan fitting position in your PC case. The sizes of all the fans on our website are shown as measured along any one of the fan’s four sides, NOT the distance between the fan’s screw holes! Our most popular fan size is 120mm, followed by 80mm. This isn’t really dictated by customer preference, but more by recent designs of PC cases.

As for the thickness (depth) of the fan, generally 25mm (1 inch) is by far the most common depth, although smaller fans can have shallower depths such as 15mm or even 10mm. All our fans are 25mm thick unless otherwise stated. If you have any questions about which fan you should order, please don’t hesitate to get in touch.

If you know the distance between the fan mounting screw holes but don’t know what fan size to order, please see the following table. Note that the mounting hole measurements shown below are taken horizontally or vertically between the holes and not diagonally.

Screw hole spacings and fan sizes

Space Between Screw Holes Fan Size

32mm 40mm

40mm 50mm

50mm 60mm

60mm 70mm

72mm 80mm

83mm 92mm

105mm 120mm
I received a small cable (resistor) with my fan; what is it for?
The resistor cable (also called Ultra Low Noise or ULN cable) is designed to allow the fan to run slightly slower for even quieter operation. The benefit in lower running noise is significant. Although the airflow will be reduced slightly, this usually has minimal effect on PC temperature. We would generally recommend using the ULN resistor cable for best results in almost all circumstances.
How can I tell which way the air blows through the fan?
Hold the fan so that the round fan sticker is facing you. You are looking at the rear of the fan. When you plug the fan in, the air will be blowing towards you. If you want a fan to act as an air intake, then the fan sticker will be facing the inside of the case. Some fans also have two small arrows moulded into their plastic housing - one arrow shows the direction of airflow, and the other (at 90°) shows the direction of blade rotation.
Is it possible to use a 4-pin PWM fan or CPU cooler with a motherboard which has only 3-pin fan headers on it?
Electrically, there is no problem doing this - the fourth pin on the fan cable is used purely for PWM control and is not needed in order for the fan to run. So you can plug the 4-pin fan connector onto the 3-pin motherboard fan header, leaving the fourth pin not connected to anything. The fan will potentially run at full speed, so if you would like to reduce the speed of the fan you will need to adjust the fan speed setting in your BIOS or use fan control software such as SpeedFan in Windows.

The only other problem to consider is that occasionally, components immediately adjacent to the motherboard fan header can get in the way of the larger 4-pin fan connector, physically preventing connection. This problem also occurs if you try to use an in-line fan speed controller such as the one made by Gelid.

Another avenue to explore is the possibility of using a bay-mounted fan controller. Several models are available now which provide 4-pin fan headers, so this is an easy way to use 4-pin PWM fans in a PC system which has only 3-pin fan headers on its motherboards. When using this method, you may find it necessary to disable any fan warning settings in your motherboard BIOS, since the motherboard may incorrectly believe that its CPU fan has failed when the fan is connected to a fan controller rather than directly to the motherboard itself.