How quiet are these fans on High and will they run ok in a PC usb socket?

They are very quiet. They have three speed settings and are very quiet on all three. Will definately run from a USB socket. I have mine running in this manner no problems at all. What I did and I would recommend is to purchase the dust filters to use with them --> https://www.amazon.co.uk/gp/product/B076BJCYBY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 These clip on and capture all the dust that the fans suck in. Saves you having to clean the blades so much and also if you are using them to cool a case then it stops the dust being pulled into the case. HTH.

I intend to use on my original xbox one. which way is best to use these when placed on top of the console? to blow air in or to extract air away?

I've not got an Xbox One, but on other devices (Sky Box and home cinema amp), they run noticeably cool when you extract the hot air away. I think not as much air will flow through trying to blow fresh air in, but it's easy to try both ways.

Can these fans be left running 24 hours a day

Yes I believe so. They are frictionless and appear to generate no heat. You could link them to a thermostat and they activate when required if you are nervous at leaving on. I have similar fans in my hub rack that are on 24-7.

Would they function well in high humidity? Are they likely to rust?

Not certain, electronics don't usually do well in high humidity. Having said that they are made of plastic and if your going to be using them to keep your amplifier cool there shouldn't be a problem. These are very good fans.

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AC Infinity MULTIFAN S7, Quiet Dual 120mm USB Fan, UL-Certified

AC Infinity MULTIFAN S7, Quiet Dual 120mm USB Fan, UL-Certified

Product ID: 56775161

Details

Brand
AC Infinity
Compatible devices
Digital Video
Cooling method
Air
Material
Rubber
Maximum rotational speed
1300 RPM
Noise level
19 Decibels

💨104 CFM airflow

🔇Ultra-quiet 19 dBA noise

🔋67,000 hrs dual ball bearing lifespan

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Description

💨 Stay cool, stay ahead—quiet power that keeps your gear and game on point.

COMPACT YET POWERFUL - Sleek 4.7-inch fans deliver a robust 104 CFM airflow to keep your electronics cool and performing.
PLUG PLAY USB POWER - Easily powers from any USB port on your AV gear or gaming consoles—no extra adapters needed.
WHISPER QUIET COOLING - Operate in near silence with just 19 dBA—perfect for focused work or gaming marathons.
DURABILITY MEETS DESIGN - Dual ball bearings ensure a long 67,000-hour lifespan and versatile placement—flat or upright.
PRECISION SPEED CONTROL - Multi-speed controller lets you dial in the perfect balance of airflow and noise for your setup.

The AC Infinity MULTIFAN S7 is a UL-certified, ultra-quiet dual 120mm USB fan designed for efficient cooling of electronics like DVRs, gaming consoles, and computer cabinets. Featuring a multi-speed controller, dual ball bearings with a 67,000-hour lifespan, and a compact design, it delivers 104 CFM airflow at just 19 dBA noise. Powered via USB, it offers versatile placement and reliable performance to protect your gear during intense use.

Specifications

ASIN	B00JLV4BWC
Air Flow Capacity	104 Cubic Feet Per Minute
Best Sellers Rank	3,442 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 4 in USB Fans
Brand	AC Infinity
Compatible Devices	Digital Video Recorder, Receiver
Cooling Method	Air
Country Of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (7,777)
Included Components	Cord
Item Dimensions L x W x H	15L x 10W x 2H centimetres
Item Highlight	for Receiver DVR Playstation Xbox Computer Cabinet Cooling
Manufacturer	AC Infinity
Manufacturer Part Number	ACAIMPF120A2
Material	Rubber
Max Rotational Speed	1300 RPM
Model Number	AI-MPF120A2
Noise Level	19 Decibels
Number of Items	1
Power Connector Type	USB
UPC	854759004341
Unit Count	1.0 count
Voltage	12 Volts
Wattage	5 watts

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₩96592

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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