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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AC Infinity MULTIFAN S4, Ultra-Quiet 140mm USB Fan with Speed Controller

AC Infinity MULTIFAN S4, Ultra-Quiet 140mm USB Fan with Speed Controller

Product ID: 6470798

Details

Brand
AC Infinity
Compatible Devices
Amplifier
Cooling Method
Air
Material
Rubber
Maximum Rotational Speed
2000 rpm
Noise Level
18 db

🌀57 CFM airflow

🔇18 dBA ultra-quiet noise

🔋67,000 hrs dual-ball bearing lifespan

E£ 3365

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Description

🆒 Stay cool, stay silent — the pro’s choice for stealthy airflow.

DURABILITY THAT LASTS - Dual-ball bearings rated for 67,000 hours ensure long-lasting, reliable performance.
PRECISION SPEED CONTROL - Multi-speed controller lets you dial in the perfect balance of airflow and silence for any setup.
PLUG PLAY USB CONVENIENCE - Powered directly via USB—no bulky adapters needed—perfect for AV gear, gaming consoles, and PCs.
WHISPER QUIET COOLING POWER - Ultra-quiet 18 dBA noise level keeps your workspace serene without sacrificing airflow.
FLEXIBLE PLACEMENT MODULAR DESIGN - Compact 140mm size with rubber feet allows flat or upright positioning; daisy-chain multiple fans for scalable cooling.

The AC Infinity MULTIFAN S4 is a UL-certified, ultra-quiet 140mm USB 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 reliable, customizable cooling for electronics like AV receivers, gaming consoles, and computer cabinets. Its USB-powered design and flexible mounting options make it an essential upgrade for professionals seeking efficient, whisper-quiet heat management.

Specifications

ASIN	B00MWH4FL4
Air Flow Capacity	57 cfm
Best Sellers Rank	#3 in Computer Case Fans
Brand	AC Infinity
Brand Name	AC Infinity
Compatible Devices	Amplifier
Cooling Method	Air
Customer Reviews	4.7 out of 5 stars 3,212 Reviews
Global Trade Identification Number	00854759004365
Item Dimensions L x W x H	1"L x 5.5"W x 5.5"H
Item Highlight	UL-Certified, Dual-Ball Bearings, Noise-Absorption Pads for Receiver DVR, PlayStation, Xbox, Computer, Cabinet Cooling
Item Weight	9.07 g
Manufacturer	AC Infinity
Material Type	Rubber
Maximum Rotational Speed	2000 rpm
Model	AI-MPF140A
Noise Level	18 db
Number of Items	1
Number of Packs	1
Part Number	FBA_AI-MPF140A
Power Connector Type	4-Pin
Product Dimensions	1"L x 5.5"W x 5.5"H
UPC	854759004365
Unit Count	1 Count
Voltage	5 volts
Wattage	1.5 watts

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E£ 3365

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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