Can I connect the fan to a power supply instead of the motherboard?

Yes, connecting to a PSU Molex runs it at 12V full speed (simple but noisy), while motherboard headers enable speed control.

Why does the fan spin at 5V if the label says 12V?

The motor has a wide tolerance (5V-13V) and may run at lower voltages, though it might not start below ~7V.

Does having more blades mean better performance?

More blades increase static pressure but may be louder; fewer blades offer higher airflow and lower noise. 7-9 blades is typical.

How do I know if the fan is dying?

Listen for clicking/grinding, check for significantly lower RPM than spec, or test if blades spin freely without wobble.

404028mm 24V 9000rpm Power Saving DC Axial Flow Fan for High Efficiency Devices

Name: 40*40*28mm 24V 9000rpm Power Saving DC Axial Flow Fan for High Efficiency Devices
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2154938422

Shanghai, ChinaFengxia Motor (Shanghai) Co., Ltd.

40*40*28mm 24V 9000rpm Power Saving DC Axial Flow Fan for High Efficiency Devices

US$3.50

500-4,999 Pieces

US$1.20

5,000+ Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Material

Plastic-Iron-Copper-Magnet

Blade Material

PBT 94ulv

Model NO.

FD4028

Type

DC Axial Flow Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Insulation Resistance

10mωor Over with at DC250V Megger

Ielectric Withstand Voltage

AC500V1s

Ambient Temperature

-10℃~+70℃(Operating) -40℃~+70℃(Storage)

Expected Life

+40° ,30000 Hours

Transport Package

Paper Box

Specification

Customized

Trademark

FUNSHARE

Origin

China

Production Capacity

100000 Pieces/Year

Key features

High Efficiency Cooling: 9000rpm DC axial flow fan with efficient heat dissipation for stable device operation.

Wide Voltage Tolerance: Operates effectively within a 5V-13V range, ensuring compatibility with various power sources.

Multiple Bearing Options: Available in sleeve, hydraulic, and double-ball bearings for different noise and lifespan needs.

Customization Support: Full customization available from samples or designs, including insulation and voltage specs.

RoHS and CE Certified: Products meet ISO9001, FCC, CE, and ROHS standards for quality and safety assurance.

Versatile Application: Suitable for notebooks, projectors, UAVs, VR headsets, and various industrial scenarios.

Quiet Operation Design: Features ultra-quiet operation with options for noise reduction via BIOS or adapters.

Durable Construction: Made with PBT 94ulv blades and plastic-iron-copper-magnet materials for high durability.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Fengxia Motor (Shanghai) Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 5 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.99h

AI-Powered supplier vetting

SummaryThe supplier demonstrates strong customization, R&D, OEM/ODM, quality-control, and complaint-handling capabilities. It reports new products within the past year, provides customization from samples and designs through full customization, and serves known brands through OEM. Production includes two lines, inventory capability, defined inspection procedures, and four QA/QC inspectors. However, important operational limitations exist: no available SDK, no overseas agents, branches, warehouse, or showroom, no offline trade-show participation, and only one experienced export-trade employee. Manufacturing controls also show gaps, including no ongoing quantity reconciliation for each batch and no standard operating procedure for outsourced manufacturing. Financial evidence is represented only by years rather than substantive indicators, so credibility cannot be determined. The supplier holds an ISO9001:2015 certificate, but the available information does not establish broader certification coverage.

Supplier typeThe supplier operates as a manufacturer with two production lines, provides OEM and ODM services, offers inventory capability, and accepts FOB and EXW quotations. It also provides full customization, but lacks overseas agents, branches, warehouses, and showrooms.

CertificationsThe supplier reports an ISO9001:2015 certificate. No additional specific certifications are identified in the provided information.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints and corrective/preventive actions, supporting an established service-response process. However, it has no overseas agents, branches, warehouse, or showroom, which limits demonstrated overseas service infrastructure.

R&D capabilityThe supplier reports new products in the past year, provides ODM services, and assigns R&D personnel to product development, design drawings, production support, and specifications. Nevertheless, it has no available SDK and no design input, output, review, validation, or confirmation documents available for audit.

Production capacityProduction evidence includes two production lines, inventory capability, one-month average lead times in both peak and off-season periods, four QA/QC inspectors, written finished-product inspection instructions, and multiple listed production machines. Controls are weakened by the absence of ongoing batch quantity reconciliation and a standard operating procedure for outsourced manufacturing.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, and full customization, with the same capability reported under both R&D and design services. This directly demonstrates broad customization coverage.