Should I connect to motherboard or power supply?

Motherboard headers enable speed control (best for 4-pin PWM). PSU Molex runs at full 12V speed but is noisier. Keep total current per header under 1A if using splitters.

Why does the fan spin at 5V if it is labeled 12V?

The motor has a wide tolerance range of 5V to 13V. It might not start below approximately 7V but will spin at 5V.

Do more blades mean better performance?

More blades increase static pressure but may be slightly louder. Fewer blades provide higher airflow and lower noise. A balance of 7-9 blades is typical.

How do I know if the fan is dying?

Listen for clicking or grinding sounds. Check RPM using software like HWMonitor; significantly lower RPM indicates issues. Power off and check if blades spin freely without wobble.

80X80X38mm 12V 2700rpm Low Current DC Axial Flow Fan for Weak Current Control System

Name: 80X80X38mm 12V 2700rpm Low Current DC Axial Flow Fan for Weak Current Control System
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2158974192

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

US$3.80

500-4,999 Pieces

US$2.50

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.

FD8038

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

Ultra-quiet Operation: Features low noise design suitable for notebooks, projectors, and VR headsets.

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

Wide Voltage Tolerance: Operates effectively within a 5V to 13V range for flexible power integration.

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

Multi-Scenario Use: Ideal for UAVs, automotive, medical, and communication equipment cooling.

Certified Quality: Meets ISO9001, FCC, CE, and ROHS standards for global compliance.

Efficient Heat Dissipation: Ensures stable operation and extended service life for electronic devices.

Compact Design: Small form factor (80x80x38mm) fits into miniature electronic 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: ≤3.42h

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 causes fan noise and how to fix it?

Noise may result from loose screws, dust buildup, or bearing type. Check mounting, clean dust, or consider switching to hydraulic bearings for a balance of quietness and durability.

Q:Which direction should the fan face?

Look for arrows on the frame. Generally, front/side fans intake cool air, while rear/top fans exhaust hot air. Tower coolers should push air toward the rear exhaust.

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. 4-pin on 3-pin header runs at full speed.

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 are tolerant of 24/7 operation.

Q:How can I make the fan quieter?

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