What causes the fan to be too loud?

Loose screws causing vibration, dust buildup increasing air resistance, or the bearing type (sleeve bearings are quiet but wear out; double-ball is louder but durable).

How do I know if the fan is dying?

Listen for clicking or grinding noises. Check RPM via software; significantly lower RPM than spec indicates issues. Power off and flick the blade; wobble or stiffness signals worn bearings.

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

Yes, connecting to a PSU Molex runs the fan at 12V full speed, which is simple but noisier. Motherboard headers enable speed control, especially with 4-pin PWM.

100X100X25mm Stable Operation Micro DC Frameless Cooling Fan for Server Cooling

Name: 100X100X25mm Stable Operation Micro DC Frameless Cooling Fan for Server Cooling
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2154019642

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

US$4.50

500-4,999 Pieces

US$3.98

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.

FX10025

Type

DC Frameless Bracket 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

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

Long Service Life: Double-ball bearings last 5-10 years, suitable for 24/7 continuous operation.

Multiple Bearing Options: Choose between sleeve, hydraulic, or double-ball bearings for noise and durability needs.

Flexible Control Interface: Supports 3-pin DC voltage control and 4-pin PWM for precise, quiet speed adjustment.

Professional Certification: Meets RoHS, ISO, CE, and FCC standards for global market compliance.

Customization Capability: Offers full customization from samples or designs to meet specific client requirements.

Versatile Application: Ideal for servers, UAVs, VR headsets, and medical equipment requiring stable cooling.

Compact Design: 100x100x25mm size ensures efficient heat dissipation in space-constrained devices.

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: ≤3.48h

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

The motor has a wide voltage tolerance, operating effectively between 5V and 13V. However, it might not start below approximately 7V.

Q:How can I reduce the fan noise?

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

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 automatic, precise, and quieter speed control. A 4-pin fan on a 3-pin header runs at full speed via DC.

Q:How long will the fan last?

Sleeve bearings last ~2-3 years. Hydraulic bearings last ~4-5 years. Double-ball bearings last 5-10 years and tolerate 24/7 operation best.

Q:Which direction should the fan face?

Check arrows on the frame: intake (cool air in) is usually front/side, and exhaust (hot air out) is rear/top. Tower coolers push air toward the rear exhaust.