What is the rpm on these?

I am not sure of the exact rpm. I can tell you that I have 7 of these. 1 80mm, 4 120mm, 2 140 mm. I use them on top of my receiver, under my laptop, router and on my nas. Very quiet while still pushing or pulling a good cfm number. Sorry I do not know the exact rpm speed but if your looking at a home theatre application I think these will work great. If you want cfm and some noise is OK you can probably do better.

How many watts does it consume?

With the a/c adapter used, 1.8 watts. Used without the a/c adapter (as usb powered) .80 of a watt.

14 months ago I purchased 3 140mm units for 24x7 usage; all 3 now fail to spin and just jiggle when plugged in. Anyone else have high failure rate?

Out of three 140mm and four 120mm units, that I own and have been running for approximately 24 months... One failure. Sent it back and got a replacement with no issues; blade broke.

I see the power cord has a usb connector on one side. is the cord hard wired to the fan or is there a connector? if a connector what type?

It is a full powered USB port? Or does the fan speed switch also affect the power coming out of the USB female attached to the fan?

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🆒 Stay cool, stay ahead — silence and power in perfect harmony.

DURABILITY THAT LASTS - Dual ball bearings rated for 67,000 hours of reliable operation.
WHISPER QUIET COOLING - Keep your workspace zen with barely-there 18 dBA noise levels.
POWERFUL 57 CFM AIRFLOW - Maximize your device’s lifespan with efficient, targeted cooling.
FLEXIBLE USB POWERED DESIGN - Plug into any USB port on your AV gear or gaming consoles—no extra adapters needed.
MODULAR DAISY CHAIN CAPABILITY - Connect up to 4 fans on one USB power source for scalable cooling power.

The AC Infinity MULTIFAN S4 is a UL-listed, ultra-quiet 140mm USB cooling fan delivering 57 CFM airflow at just 18 dBA noise. Featuring a multi-speed controller and durable dual ball bearings rated for 67,000 hours, it offers flexible horizontal or vertical mounting. Powered via USB, it supports daisy chaining up to 4 fans for enhanced cooling of electronics like gaming consoles, DVRs, and AV equipment, all while meeting CE, RoHS, and UL safety certifications.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

€ 97.18

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Received my product in pristine condition. Great service overall.

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Manufacturer	AC Infinity
Part number	FBA_AI-MPF140A
Item Weight	9.07 g
Product Dimensions	2.54 x 13.97 x 13.97 cm; 9.07 g
Is Discontinued By Manufacturer	No
Size	140 mm
Color	Black
Material	Rubber
Voltage	5 Volts
Wattage	1.5 W
Airflow	57 Cubic Feet Per Minute
Noise Level	18 dB
Specification met	Ce/Rohs/Tuv/Ul
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	25 x 140 x 140 mm

AC Infinity MULTIFAN S4 静音 140mm USB Fan 冷却ファン UL認定済み受信機 DVR プレイステーション Xbox パソコンキャビネット冷却デュアルバージョン

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Description

Specifications

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Common Questions

AC Infinity MULTIFAN S4 静音 140mm USB Fan 冷却ファン UL認定済み 受信機 DVR プレイステーション Xbox パソコン キャビネット 冷却 デュアルバージョン

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions

AC Infinity MULTIFAN S4 静音 140mm USB Fan 冷却ファン UL認定済み受信機 DVR プレイステーション Xbox パソコンキャビネット冷却デュアルバージョン