Noctua NF-A4x20 5V PWM Case Fan – Ultra-Quiet

Noctua NF-A4x20 5V PWM Case Fan – Ultra-Quiet, High-Performance 40mm Cooling Solution

Silent, Efficient, Compact – Perfect for Specialized Cooling Applications!

The Noctua NF-A4x20 5V PWM is a premium-quality, ultra-quiet 40mm case fan designed to deliver exceptional cooling performance with minimal noise. Equipped with PWM control, advanced aerodynamic features, and Noctua’s renowned SSO2 bearing technology, this compact fan is ideal for demanding cooling scenarios like small-form-factor PCs, NAS devices, network equipment, and other specialized electronics requiring reliable airflow and low noise levels.

Key Features & Specifications:

Type: Case Fan
Dimensions: 40mm (W) x 40mm (H) x 20mm (D)
Weight: 186 grams
Speed Range: 1,100 – 5,000 RPM (PWM Controlled)
Noise Level: 14.9 dB(A) – Whisper-quiet operation
Volume Flow: 9.4 m³/h (5.5 CFM)
Static Pressure: Up to 2.26 mm/H₂O
Bearing Type: SSO2 (Self-Stabilising Oil-Pressure Bearing)
Voltage Range: 5V ONLY ( Not compatible with 12V power sources)
Power Connection: 4-Pin PWM Connector
Power Consumption: 0.5 Watts

Advanced Technologies:

AAO Frame (Advanced Acoustic Optimisation): Minimizes noise and vibration for ultra-quiet operation.
A-Series with Flow Acceleration Channels: Enhances airflow efficiency and reduces turbulence.
SSO2 Bearing: Ensures long-term stability, durability, and whisper-quiet performance.
PWM Control: Allows precise fan speed adjustment for optimized cooling and acoustics.

What’s Included:

1 x Noctua NF-A4x20 5V PWM Fan
Low-Noise Adapter (LNA)
Extension Cable & Splitter Cable
Anti-Vibration Mounts & Screws
Comprehensive User Manual

Why Choose the Noctua NF-A4x20 5V PWM Fan?

Perfect for Low-Voltage Applications – Specifically designed for 5V operation, making it ideal for devices like Raspberry Pi, networking hardware, small cases, and compact builds.
Whisper-Quiet Performance – Operates at a minimal 14.9 dB(A), ensuring a peaceful environment.
Energy-Efficient & Reliable – Consumes only 0.5W, built to run continuously without fail.
Compact & Versatile – Small size with powerful airflow makes it perfect for tight spaces and targeted cooling.

Suitable for Bitaxe Gamma to reduce noise and increse coooling.

Important Note:

The Noctua NF-A4x20 5V PWM is NOT compatible with 12V power sources.
Connecting it to standard 12V PC fan headers WILL DAMAGE the fan. It is designed exclusively for 5V operation.

FAQs:

Can I use this fan in my desktop PC?
Only if your system supports 5V PWM fan headers. Connecting to standard 12V headers is not safe.

Is this fan good for Raspberry Pi or NAS cooling?
Absolutely! The low voltage, compact size, and low noise levels make it a top choice for these applications.

What is included in the package?
You’ll receive the fan, mounting accessories, low-noise adapter, extension cables, and everything needed for a seamless installation.

Enhance Your Cooling Setup with the Noctua NF-A4x20 5V PWM – Precision Cooling, Whisper-Quiet Performance!