How do I know if the fan is failing?

Listen for clicking or grinding noises, check if RPM is significantly lower than spec using monitoring software, or manually check if blades spin freely without wobble.

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

Yes, connecting to a PSU Molex runs the fan at 12V full speed. However, this is simpler but noisier than using a motherboard header with speed control.

120X120X25mm Long Service Life High Speed Axial Flow Fan for Computer Case Cooling

Name: 120X120X25mm Long Service Life High Speed Axial Flow Fan for Computer Case Cooling
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2155319322

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

US$3.60

500-4,999 Pieces

US$2.10

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.

FD12025

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

Multi-Scenario Cooling: Suitable for notebooks, UAVs, VR headsets, and industrial equipment.

Certified Quality: Meets RoHS, ISO, CE, and FCC standards for global compliance.

Customization Options: Supports full customization from samples, designs, and OEM/ODM services.

High Durability: Features strong adaptability and ultra-quiet operation for stable use.

Compact Design: 120x120x25mm size offers efficient heat dissipation in portable devices.

Fast Delivery: Standard lead time of one month for both peak and off-season orders.

100% Inspection: Every unit undergoes visual and functional inspection before shipping.

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: ≤3.21h

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.

Product Q&A

Q:How do I determine the correct airflow direction?

Look for arrows on the frame. Generally, front/side fans are for intake (cool air in), and rear/top fans are for exhaust (hot air out).

Q:What is the difference between 3-pin and 4-pin connectors?

3-pin uses DC voltage control for fixed or stepped speeds. 4-pin uses PWM for auto speed control, offering quieter and more precise operation.

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

The motor has a wide tolerance and can run between 5V and 13V. However, it might not start if the voltage drops below approximately 7V.

Q:How can I reduce fan noise?

Use rubber grommets instead of screws, install an inline resistor to lower voltage, or adjust the BIOS fan curve to keep RPM low until temperatures rise.

Q:What should I do if the fan is too loud?

Check for loose screws causing vibration, remove dust buildup, lower the RPM via software, or consider switching to a hydraulic bearing type.