Top 10 40mm Quiet Fan – Computer Case Fans

As an Amazon Associate I earn from qualifying purchases.

1. MakerFocus

#ad

DVR and Other Small Appliances Series Repair Replacement, MakerFocus 4pcs 3D Printer Fan 12V, 40mm 12 Volt Fan 0.08A DC Mini Quiet Cooling Fan 40X40X10mm with 28cm Cable for 3D Printer

#ad
MakerFocus #ad - Bearing is high precision, long life and low noise. Oil bearing 30000 hours; certification: CE, UL, CUL. Size: 40 mm x 40 mm x 10 mm; working Voltage: DC 12V. Working current: 008a; air flow: 5. 75±10% cfm; power: 096w; cable length: 280mm. Temperature of usage environment: -10℃ to +70℃.
BrandMakerFocus #ad
ManufacturerMakerFocus #ad
Height0.39 Inches
Length1.57 Inches
Weight0.13 Pounds
Width1.57 Inches
Part NumberABBSWNG-SJS22

2. Noctua

#ad

Brown, Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin 40x10mm

#ad
Noctua #ad - Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers.

3-pin 12v flx version can be run 4500 or 3700 rpm using the supplied Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation. Ideal replacement for noisy or broken 12v 4cm fans in 3D printers, NAS, other network and storage devices, routers, DVRs, switches, etc. Premium quiet fan, 4500/3700 rpm, >150, 12v, 40x40x10 mm, max.17. 9 dba, 3-pin molex, 000 h MTTF. Award-winning 40x10mm a-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance.
BrandNoctua #ad
ManufacturerNoctua #ad
Height1.57 Inches
Length1.57 Inches
Weight0.35 Pounds
Width0.39 Inches
Part NumberNF-A4x10
ModelNF-A4x10
Warranty6 year manufacturer’s warranty

3. Noctua

#ad

Brown, Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin 40x20mm

#ad
Noctua #ad - 40x20mm size ideal for 1u servers or replacing fans in network and storage equipment routers, switches, NAS etc. Premium quiet fan, max.

Includes anti-vibration mounts, fan screws, extension cable, y-cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers. Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. 14. 9 dba, 12v, 000 h mtTF. Or other devices such as DVRs. 4-pin pwm version for automatic speed control via 4-pin PWM fan headers, 5000rpm maximum speed 4400rpm with supplied Low-Noise Adaptor. 5000 rpm, 40x40x20 mm, >150, 4-pin pwm, max.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.79 Inches
Length1.57 Inches
Weight2.2 Pounds
Width1.57 Inches
Part NumberNF-A4x20 PWM
ModelNF-A4x20 PWM
Warranty6 year manufacturer’s warranty

4. Noctua

#ad

3-Pin 40x20mm, Noctua NF-A4x20 FLX, Brown, Premium Quiet Fan

#ad
Noctua #ad - Or other devices such as DVRs. 3-pin flx version provides 5000/4400/3700rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation.

Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers. Premium quiet fan, >150, 5000/4400/370 rpm, 12v, max.114. 9 dba, 3-pin molex, 40x40x20 mm, 000 h MTTF.40x20mm size ideal for 1u applications or replacing fans in network and storage equipment routers, switches, NAS etc. Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.79 Inches
Length1.57 Inches
Weight5.52 Kilograms
Width1.57 Inches
Part NumberNF-A4x20 FLX
ModelNF-A4x20 FLX
Warranty6 year manufacturer’s warranty

5. Noctua

#ad

Premium Quiet Fan, Brown, Noctua NF-A4x10 PWM, 4-Pin 40x10mm

#ad
Noctua #ad - Or other devices such as DVRs. 40x10mm size ideal for 1u servers or replacing fans in network and storage equipment routers, switches, NAS etc.

Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. 4-pin pwm version for automatic speed control via 4-pin PWM fan headers, broad 1000-5000rpm speed range 3700rpm max. With supplied Low-Noise Adaptor. Premium quiet fan, >150, max. 19. 6 dba, 000 h mtTF. 5000 rpm, 40x40x10 mm, 4-pin pwM, 12v, max. Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.39 Inches
Length1.57 Inches
Weight0.37 Pounds
Width1.57 Inches
Part NumberNF-A4x10 PWM
ModelNF-A4x10 PWM
Warranty6 year manufacturer’s warranty

6. AC Infinity

#ad

UL-Certified for VR Gear, Raspberry Pi, Compact 40mm x 20mm USB Fan, Cosplay, AC Infinity MULTIFAN Mini, Roku, Aquarium, Router, Helmet Cooling Ventilation

#ad
AC Infinity #ad - Compact and energy-efficient USB fan designed various DIY cooling and ventilation projects. Airflow: 12 cfm | noise: 18 dBA| Bearings: Dual Ball. Usb plug can power the fan through USB ports found behind electronics and on portable power banks. Dual-ball bearings have a lifespan of 67, 000 hours and allows the fans to be laid flat or stand upright. Dimensions: 1. 6 x 1. 6 x 08 in. Features a multi-speed controller to set the fan’s speed to optimal noise and airflow levels.
BrandAC Infinity #ad
ManufacturerAC Infinity #ad
Part NumberAI-MPF40A
ModelAI-MPF40A

7. coolerguys

#ad

Coolerguys 12v Ultra Quiet Fan for Pi Devices, and Microelectronics 40x20mm, 3D Printers

#ad
coolerguys #ad - Bearing type: Sleeve Bearing. Certifications: ROHS, CE. Mtbf: 40, 000 hours. Package dimensions: 3. 11 inch l x 2. 68 inch W x 083 inch H.
Brandcoolerguys #ad
ManufacturerCoolerguys #ad
Part NumberCGXXXXL12S

8. Noiseblocker

#ad

14 dBa, Noiseblocker NB-BlackSilentFan XM2 40x40x10mm Silent Fan, 3800RPM

#ad
Noiseblocker #ad - 40mm x 40mm x 10mm. Nb-blacksilentFan XM2. 3. 94 cfm airflow. 14 dba noise level. 3800rpm Fan speed.
BrandNoiseblocker #ad
ManufacturerNoiseblocker #ad
Height1.3 Inches
Length8.8 Inches
Width3.5 Inches
Part NumberNB-XM2
ModelNB-XM-2

9. ELUTENG

#ad

Router, Xbox, Playstation, ELUTENG Dual 40mm USB Fan with 3 Speeds Adjustable 5V PC Fan Max 5500RPM 40mm * 40mm * 25mm Mini Case Fan Quiet Computer Fan Compatible for PC, TV Box

#ad
ELUTENG #ad - Note: the 40mm fan is small and the speed will increase to achieve the heat dissipation effect, routers, this usb fan can be used in narrow places such as computer hosts, so some noise will be generated during use. Two fans can be connected to one USB cable and run at the same time to improve efficiency.

Wide applicationthis usb pc fan is not only suitable for cooling equipment such as personal computers, routers and HDDs, but also suitable for AV equipment and game consoles. With a large air volume design and an external hard disk box, game consoles and personal computers in a few seconds. With a design of mini and lightweight, etc. 2 in 1 usb fancompared to a single fan, it can also cool electronic devices such as smart phones, the latest upgraded 2 in 1 dual usb fans can cool electronic products from different angles at the same time, which is more efficient.

With a speed adjustment switch, noise: L:23 / H:27. 3dB. Double ball bearing design & long service lifeadopt high-quality double ball bearing motor, the service life is twice that of ordinary fans, and it can work continuously for a long time. It can also be placed in a small gap on a desk or computer to cool down electronic products. 40mm mini designproduct size is 40 * 40 * 25mm exclude metal frame. Simply connect to a device equipped with a USB terminal than can start cooling easily without cumbersome wiring.
BrandELUTENG #ad
Part NumberAUB08ZY7X4CR

10. ANVISION

#ad

YDM4010B12, Dual Ball Bearing, ANVISION 2-Pack 40mm x 10mm DC 12V Brushless Cooling Fan

#ad
ANVISION #ad - Bearing type: Dual Ball Bearing. Airflow: 7. 56cfm, speed: 6200prm, noise: 27. 50dbA. Rated voltage: 12v dc, Current: 01a. Lead wire: 2-pin-2. 5mm connector, length: 150mm / 5. 90inch. Warranty: two years, Package: 2x DC brushless fans.
BrandANVISION #ad
ManufacturerANVISION INC #ad
Weight0.11 Pounds
Part NumberAN-YDM4010B12
ModelAN-YDM4010B12