50mm x 15mm USB Blower Fan 5V Variable Speed for Welding Helmet | 2PCS Squirrel Cage Blower Fan DC Brushless Turbo Small Computer Case Fan for Cooling 3D Printer Costume Thin Client CPU Modem

AmRunJe

AmRunJe 50mm x 15mm USB Blower Fan 5V Variable Speed for Welding Helmet

Name: 50mm x 15mm USB Blower Fan 5V Variable Speed for Welding Helmet | 2PCS Squirrel Cage Blower Fan DC Brushless Turbo Small Computer Case Fan for
Brand: AmRunJe
SKU: B0DP4MYTWJ

Status: 50mm x 15mm USB Blower Fan 5V Variable Speed for…: Unavailable on Amazon as of 2026-10-07 04:26 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The 50mm x 15mm USB Blower Fan 5V Variable Speed for Welding Helmet: Three-speed USB inline control remembers your last setting after power cycling; main trade-off: 2.9 CFM airflow suits small enclosures only, not full tower case cooling.

Unavailable on Amazon as of 2026-10-07 04:26 UTC

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Currently unavailable on Amazon. Not the same product — an in-stock alternative:

Similar: 80mm x 15mm Ultra-Thin 12V Brushless 4PIN PWM… — $14.99 on Amazon as of 2026-10-06 22:21 UTC (price may vary).

View Current Price — $14.99

Original listing (currently unavailable) → Compare to similar pc cases

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ Three-speed USB inline control remembers your last setting after power cycling
✓ Only 15mm thick, so it fits clearances a standard 50mm axial fan cannot
✓ Side intake with 90-degree centrifugal exhaust vents tight enclosures directionally
✓ 0.45 in H2O static pressure pushes air through restrictive grilles and filters
✓ Runs on 0.5W at 5V from any phone charger, power bank, router, or PC port

Cons

✗ 2.9 CFM airflow suits small enclosures only, not full tower case cooling
✗ 25 dBA blower whine is more audible than a same-size axial fan
✗ Sleeve bearings wear faster than ball bearings in continuous 24/7 duty
✗ USB-A only, so no 4-pin PWM header or motherboard fan curve control

SpecPicks Verdict

SpecPicks scored 50mm x 15mm USB Blower Fan 5V Variable Speed for Welding Helmet using a rating × review-volume × price-fit model applied to published specs and reviews across the pc cases category. AmRunJe's pc cases lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for pc cases of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Application: Provides cooling airflow for electronic equipment such as 3D printer enclosures, AV receivers, hard drive arrays, and ventilation systems. Common use in vivariums, entertainment centers, RV refrigerators, and humidifiers
Small Space Vent: This compact and mighty usb cooling fan pulls in air from the side and pushes it out centrally at a 90-degree angle, suit for tight spots with limited clearance
Usb-A Power: Linked by a 2-in-1 USB speed control cable, these usb cooling fan for electronics offer USB interface compatibility for easy use. They can be powered up with a phone charger, computer, router, power bank, and more
Variable Speed: The included 2-in-1 USB speed cable offers three settings: high, medium, and low. You can pick the airflow and noise level that suit you, and it remembers your last speed choice, so you don't need to reset it when you power up again
Specification of Variable Speed Fan: 50 x 50 x 15 mm（1.97x1.97 x 0.59 inch）| Rated Voltage/ Current: 5V 0.12A | Speed: 3500 RPM | Air flow: 2.9 CFM | Noise: 25 dBA | Power:0.5 Watt | Connector: USB-A | Bearings: Sleeve | Air Pressure:0.45 In H2O

Full Specifications

Brand	AmRunJe
Model	5015X2S-USB blower
Turbo	Yes
Voltage	5 volts
Material	Plastic
Dimensions	50 x 50 x 15 mm
Unit Count	2 Count
Noise Level	25 db
Part Number	5015X2S-USB blower
Connectivity	USB
Material Type	Plastic
Cooling Method	Air
Number of Items	1
Air Flow Capacity	2.9 cfm
Compatible Devices	Laptop
Included Components	usb blower fan*2,speed controller
Power Connector Type	USB
Maximum Rotational Speed	3500 rpm
Item Dimensions L x W x H	1.97"L x 0.59"W x 1.97"H
Full listing title	50mm x 15mm USB Blower Fan 5V Variable Speed for Welding Helmet \| 2PCS Squirrel Cage Blower Fan DC Brushless Turbo Small Computer Case Fan for Cooling 3D Printer Costume Thin Client CPU Modem

Ready to buy?

Amazon shows no buyable offer for 50mm x 15mm USB Blower Fan 5V Variable Speed for… at the last check. A similar in-stock product is 80mm x 15mm Ultra-Thin 12V Brushless 4PIN PWM…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $14.99