Should I connect the fan to the motherboard or power supply?

Motherboard headers enable speed control (best for 4-pin PWM), while PSU Molex runs at full 12V speed but is noisier.

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.

Do 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 RPM drops via software, or manually spin blades to check for wobble or stiffness.

90X90X38mm Compact Energy Saving Brushless Axial Flow Fan for Cooling System

Name: 90X90X38mm Compact Energy Saving Brushless Axial Flow Fan for Cooling System
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2155258822

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

US$2.20

500-4,999 Pieces

US$1.00

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.

FD9038

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

Compact Energy Saving Design: 90x90x38mm brushless axial flow fan with efficient heat dissipation for stable device operation.

Wide Application Scenarios: Suitable for notebooks, projectors, UAVs, VR headsets, and various industrial or office environments.

High Durability & Quiet Operation: Features ultra-quiet operation, high durability, and strong adaptability for extended service life.

Certified Quality Standards: ISO9001 certified with FCC, CE, and ROHS standards ensuring quality at every production stage.

Full Customization Service: Supports customization from samples, designs, and full customization to meet specific customer needs.

Professional Manufacturer: Fengxia Motor excels in R&D, design, and production with 4 R&D engineers and 2 production lines.

100% Finished Product Inspection: Strict visual and function inspection for all finished products to ensure consistent quality.

Global Market Presence: Products sold in China, Europe, US, South Korea, Japan, Russia, and Ukraine with fast delivery.

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: ≤4.26h

AI-Powered supplier vetting

SummaryThe supplier provides extensive customization options and has a strong research and development capability, including ODM services and new product development. However, they lack overseas warehouse and showroom capabilities, and do not have overseas agents or participate in trade shows. Their financial data is up-to-date and they hold an ISO9001:2015 certification. Despite having quality assurance processes, the manufacturing capacity seems limited with only two production lines and no ongoing volume reconciliation or outsourcing SOPs.

CertificationsHolds an ISO9001:2015 certificate, indicating compliance with quality management standards.

After-Sales capabilityHas clear procedures and records for handling customer complaints and implementing corrective actions.

Financial creditFinancial data is current, with information available up to the last three years, demonstrating financial stability.

R&D capabilityStrong R&D capabilities with evidence of new product development, though lacking in audit documentation.

Production capacityLimited production capability with only two production lines, and lacks ongoing volume reconciliation and outsourcing SOPs.

Customization capabilityOffers full customization services from samples and designs, with a comprehensive design service capability.

Client casesProvides OEM services for well-known brands, suggesting a history of working with reputable companies.

Product Q&A

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

Check for loose screws causing vibration, remove dust buildup, lower RPM via BIOS, or consider bearing type (hydraulic is quieter than sleeve).

Q:Which direction should the fan face?

Follow arrows on the frame: intake for front/side (cool air in) and exhaust for rear/top (hot air out).

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

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

Q:How long will the fan last?

Sleeve bearings last ~2-3 years, hydraulic ~4-5 years, and double-ball bearings last 5-10 years with 24/7 tolerance.

Q:How can I make the fan quieter?

Use rubber grommets, inline resistors to lower voltage, or adjust BIOS fan curves to keep RPM low until temperatures rise.

Send Inquiry

*To: