Fan Noctua 40x40x10 5V 4500rpm NF-A4x10-5V

This Noctua NF-A4x10-5V is a small but serious 40 mm fan aimed at those who want reliable and quiet cooling at 5 V power supply. With high 4500 RPM, 4.83 CFM airflow, and a low noise level of just 17.9 dBA, it is a good choice for compact cases, networking devices, small servers, or DIY projects. The thin profile of 10 mm gives you more freedom when mounting in tight spaces, and the SSO2 bearing is focused on long life and stable operation. Add to that the rich accessory package, and you get a fan that easily integrates into almost any configuration.

What you get
Operating at 5 V means you can use it not only in PC cases but also in devices with USB power, embedded systems, and small controllers, as long as you have the appropriate connector. With a consumption of only 0.25 W and a current of 0.05 A, the load on the power supply is minimal, which is important for sensitive or multi-component systems. The airflow of 4.83 CFM is more than enough for local cooling of areas like VRM, chips, networking equipment, or small cases, and the low noise level helps the device remain unobtrusive even in a quiet office or home environment. MTBF of 150,000 hours speaks to reliability in 24/7 operation, so you won’t think about replacement anytime soon. The included adapters, extension, and OmniJoin kit make installation easy even in systems without a standard 3-pin connector.

• Compact size 40 x 40 x 10 mm, suitable for tight cases, networking devices, and mini-ITX configurations.
• Speeds up to 4500 RPM, providing a good balance between airflow and static pressure for a small area.
• Airflow 4.83 CFM / 8.2 m³/h, sufficient for targeted cooling of critical components in compact systems.
• Low noise level of just 17.9 dBA, making the fan suitable for quiet work and home environments.
• Efficient and reliable SSO2 Bearing with declared 150,000 hours MTBF for long-term 24/7 use.
• Operating at 5 V with a consumption of 0.25 W and a current of 0.05 A, gentle on the power supply and convenient for non-standard applications.
• 3-pin connector and accessory kit: 4 anti-vibration mounts, 3:2-Pin adapter, OmniJoin kit, and 30 cm extension cable for flexible installation.

Who is it suitable for
This fan is suitable if you need compact, quiet, and reliable cooling for small cases, networking equipment, NAS, media players, or DIY projects with 5 V power supply. It is ideal for situations where size and noise are more important than massive airflow. It is not suitable as a primary fan for large gaming cases – there, 120/140 mm models with higher CFM are more logical.

The most sensible thing about this model is the combination of 5 V power supply, compact size, quiet profile, and very long life, backed by a rich accessory package and 72 months warranty. If you are looking for a “set and forget” 40 mm fan, this Noctua is exactly that type of solution.