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, Quiet 140mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling

Product ID: 254325798

Details

Brand
AC Infinity
Power connector type
USB
Product dimensions
25L x 140W x
Voltage
5 Volts
Wattage
1.5 watts

🌀57 CFM airflow

🔇18 dBA ultra-quiet

🔋67,000 hrs dual-ball bearing lifespan

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Description

🌀 Stay cool, stay ahead — the silent powerhouse your gear deserves!

SPACE SAVVY DESIGN - Detachable parts reduce height for tight spaces, ensuring seamless integration into any setup.
PLUG PLAY USB POWER - Powered directly from USB ports on your AV gear or consoles—no extra adapters needed.
WHISPER QUIET COOLING - Ultra-quiet 18 dBA noise level keeps your setup serene and distraction-free.
CUSTOMIZABLE AIRFLOW CONTROL - Multi-speed controller lets you dial in the perfect balance of airflow and silence.
DURABILITY MEETS FLEXIBILITY - Dual-ball bearings rated for 67,000 hours, designed to stand upright or lay flat for versatile placement.

The AC Infinity MULTIFAN S4 is a UL-certified, ultra-quiet 140mm USB fan engineered to optimize cooling for gaming consoles, AV receivers, and computer components. Delivering 57 CFM airflow at just 18 dBA noise, it features a multi-speed controller and durable dual-ball bearings rated for 67,000 hours. Its flexible design allows for upright or flat placement, powered conveniently via USB, making it the essential silent cooling upgrade for any professional or enthusiast setup.

Specifications

ASIN	B00MWH4FL4
Air Flow Capacity	57 Cubic Feet Per Minute
Best Sellers Rank	#39,370 in Computers ( See Top 100 in Computers ) #260 in Computer Case Fans
Brand Name	AC Infinity
Compatible Devices	Amplifier
Cooling Method	Air
Customer Reviews	4.6 4.6 out of 5 stars (3,100)
Global Trade Identification Number	00854759004365
Item Dimensions L x W x H	25L x 140W x 140H millimeters
Item Weight	0.02 Pounds
Manufacturer	AC Infinity
Material Type	Rubber
Maximum Rotational Speed	2000 RPM
Model	AI-MPF140A
Noise Level	18 Decibels
Number of Items	1
Number of Packs	1
Part Number	FBA_AI-MPF140A
Power Connector Type	USB
UPC	854759004365
Unit Count	1 Count
Voltage	5 Volts
Wattage	1.5 watts

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$60.14

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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