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

Connect to the motherboard header for speed control, especially with 4-pin PWM fans. Connecting to a PSU Molex runs it at full 12V speed, which is simpler but noisier.

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

The fan has a wide voltage tolerance, operating from 5V to 13V. It might not start below ~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 with 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 via software; significantly lower RPM indicates issues. Power off and flick the blade; wobble or stiffness signals worn bearings.

90X90X38mm Low Noise Durable Brushless Axial Flow Fan for Cabinet Cooling

Name: 90X90X38mm Low Noise Durable Brushless Axial Flow Fan for Cabinet Cooling
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2155256742

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

Ultra-Quiet Operation: Designed for low noise performance, suitable for notebooks, projectors, and VR headsets.

High Durability: Features PBT 94ulv blades and robust construction for extended service life.

Wide Voltage Tolerance: Operates effectively within a 5V to 13V range for versatile compatibility.

Multiple Bearing Options: Available in sleeve, hydraulic, and double-ball bearings for different lifespans.

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

Certified Quality: ISO9001 certified with RoHS, CE, and FCC compliance for global markets.

Compact Design: 90x90x38mm size ideal for cabinet cooling and space-constrained devices.

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

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: ≤4.19h

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 causes fan noise and how to fix it?

Noise can result from loose screws, dust buildup, or bearing type. Fix by tightening mounts, cleaning dust, lowering RPM, or choosing hydraulic bearings for a balance of quietness and durability.

Q:How do I determine the correct airflow direction?

Look for arrows on the frame. Front/side fans usually 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. A 4-pin fan on a 3-pin header runs at full speed.

Q:How long does the fan last based on bearing type?

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:How can I make the fan quieter?

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