Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO frame, the NF-A4x10 5V PWM is a PWM enabled 5V variant of Noctua’s award-winning, premium quality quiet 40x10mm fan. The custom designed NE-FD3 PWM IC that integrates Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings assure superb running smoothness and excellent long-term stability. Topped off with modular cabling and the OmniJoin Adaptor Set Adaptor Set, the NF-A4x10 5V PWM is a premium choice for demanding 5V applications that require PWM control.
5V PWM version
Many devices such as network or storage solutions use 5 volt 40mm fans with PWM speed control. With the same operating voltage, PWM support and the included OmniJoin adaptor set that makes it compatible with proprietary fan headers, the NF-A4x10 5V PWM is ideal for replacing noisy or broken 5V 40mm fans with PWM.

Please Note: Being a 5V fan, the NF-A4x10 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

Notes and warnings

Being a 5V fan, the NF-A4x10 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

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.

SSO2 Bearing
The NF-A4x10 features the further optimised second generation of Noctuas renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.

Reduced motor hub size
This allows for more blade surface area and thus contributes to the NF-A4x10s superior airflow and pressure performance.

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.

FAN Specification
Size 40x40x10 mm
Mounting hole spacing 32x32 mm
Connector & pin-configuration 4-pin PWM Cable length
20cm + 30cm NA-EC1 extension cable
Bearing SSO2
Blade geometry A-Series with Flow Acceleration Channels
Frame technology AAO (Advanced Acoustic Optimisation)
Rotational speed (+/- 10%) 5000 RPM
Min. rotational speed (PWM, +/-20%) 1000 RPM
Airflow 8,9 m³/h
Acoustical noise 19,6 dB(A)
Static pressure 1,95 mm H₂O
Max. input power 0,35 W
Max. input current 0,07 A
Operating voltage 5 V
MTTF > 150.000 h

Scope of delivery

30cm extension cable
NA-AV3 anti-vibration mounts
USB power adaptor cable
OmniJoin adaptor set
Fan screws