What should I do if the fan is too loud?

Check for loose screws causing vibration, remove dust buildup, lower the RPM via BIOS, or consider replacing sleeve bearings with hydraulic or double-ball bearings.

How do I know if the fan is dying?

Listen for clicking or grinding noises, check if RPM is significantly lower than spec using monitoring software, or manually spin the blade to check for wobble or stiffness.

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

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

35X35X6mm 4 Wire Tachometer Signal DC Blower Fan for Network Switch Power Supply

Name: 35X35X6mm 4 Wire Tachometer Signal DC Blower Fan for Network Switch Power Supply
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2152719222

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

US$4.00

500-4,999 Pieces

US$3.60

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.

3506

Type

DC Blower 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 on 5V-13V, ensuring compatibility with various power sources.

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

PWM Speed Control: 4-pin PWM support enables precise, auto speed control for quieter and efficient operation.

High Durability: Double-ball bearings last 5-10 years, suitable for 24/7 continuous operation.

RoHS & CE Certified: Products meet FCC, CE, and ROHS standards, ensuring quality and safety.

Customization Available: Supports full customization from samples or designs to meet specific customer needs.

Compact Design: 35x35x6mm size fits notebooks, projectors, UAVs, and other miniature electronic devices.

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

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: ≤3.19h

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

3-pin fans use DC voltage control for fixed or stepped speeds. 4-pin fans use PWM for auto speed control, offering quieter and more precise operation. A 4-pin fan can run on a 3-pin header but will operate at full speed.

Q:How long does the fan last?

Lifespan depends on the bearing type: Sleeve bearings last ~2-3 years; Hydraulic bearings last ~4-5 years; Double-ball bearings last 5-10 years and are tolerant of 24/7 operation.

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

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

Q:How can I make the fan quieter?

Use rubber pegs or grommets to reduce vibration, use a low-noise adapter to lower voltage, or adjust the BIOS fan curve to keep RPM low until temperatures rise.

Q:Which direction should the fan face?

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