The fan picture shows the top of the fan. The S2 sits flat on the top of what you want to cool and it sucks air up out of what it is sitting on and blows the air out the rectangular port on one side.

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MULTIFAN S2, Quiet 120mm USB Blower Fan with Speed Control, UL-Certified for Receiver DVR Xbox Modem AV Cabinet Cooling

MULTIFAN S2, Quiet 120mm USB Blower Fan with Speed Control, UL-Certified for Receiver DVR Xbox Modem AV Cabinet Cooling

Q: My S2 centrifugal fan is too noisy even on the lowest speed, I can hear a constant note from it. How can I run it slower than low?

You might be able to rig up a second speed switch in series with the first, which will have a subtractive effect on the voltage. I have two S2 fans in series, each with a speed setting switch, and the first switch affects both fans, the second affects only the second fan, which did indeed run slower as it stopped on lowest setting and is running (slower) on the mid setting. If it runs slower though, it may stop and it won`t be cooling much at all. Maybe the fan is in need of some TLC? Have you tried applying some lubricant to the fan, such as WD40 with added silicon? I am running 3 of these fans, on mid speed, and can`t hear them from 10 feet away. If the fan is just annoying you when whatever it is cooling is not on, then try plugging it into a USB that switches off when the gear is off. My TV and amplifier do that, only the Sky box leaves the USB power on all the time. Getting a second fan might allow you to run them in series with one running slower, or may demonstrate that your current fan is unusually noisy, in which case you already have a replacement.

Q: Do you get 1 or 2 fans in the pack?

This is a single fan in the S2 pack (I agree there are a couple of misleading photos showing use of 2 of them). Looks like there's a pair of fans in the S7 pack if you want two connected together from one power source. I have 2 S2 fans daisy-chained together powered by one amplifier`s USB outlet to cool itself and a separate power amp, so they only come on when the amplifier is on.

Product ID: 60827217

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Details

Product dimensions
25L x 120W x
Brand
AC Infinity
Power connector type
4-Pin
Voltage
5 Volts
Wattage
1.2 watts
Cooling method
Air

🌀35 CFM airflow

🔇Ultra-quiet 17 dBA noise

🎛️Multi-speed controller

Frequently Bought Together

AC Infinity MULTIFAN S2, Quiet 120mm USB Blower Fan with Speed Control, UL-Certified for Receiver DVR Xbox Modem AV Cabinet Cooling

AC Infinity Controller 1, Thermal Trigger for AIRPLATE, MULTIFAN, USB Fans and Devices. Computer, AV Cabinet, Home Theater Cooling.

AC Infinity Turbo Fan Power Adapter, for MULTIFAN Series USB Fans

Description

🖤 Cool your tech, not your vibe.

UL CERTIFIED SAFETY - Reliable, certified quality for peace of mind in your tech sanctuary.
WHISPER QUIET COOLING - Keep your gear chill without the noise distraction.
PRECISION SPEED CONTROL - Customize airflow for perfect balance between silence and performance.
USB POWERED CONVENIENCE - Plug directly into your devices—no extra power adapters needed.
COMPACT LOW PROFILE DESIGN - Fits seamlessly in tight AV cabinets and gaming setups.

The AC Infinity MULTIFAN S2 is a UL-certified, ultra-quiet 120mm USB blower fan delivering 35 CFM airflow at just 17 dBA noise. Its compact, low-profile design with multi-speed control fits perfectly atop AV cabinets, gaming consoles, and modems, powered conveniently via USB for efficient heat dissipation and enhanced device longevity.

Specifications

Manufacturer	AC Infinity
Part number	AI-MPB140A
Item Weight	226 g
Product Dimensions	12.7 x 12.7 x 2.54 cm; 226.8 g
Item model number	AI-MPB140A
Size	S2 - 120 mm Blower
Colour	Black
Material	Silicone
Voltage	5 Volts
Wattage	1.2 watts
Item Package Quantity	1
Air Flow Capacity	35 Cubic Metres Per Minute
Noise Level	17 Decibels
Batteries included?	No
Batteries Required?	No

Have a Question? See What Others Asked

My S2 centrifugal fan is too noisy even on the lowest speed, I can hear a constant note from it. How can I run it slower than low?

Do you get 1 or 2 fans in the pack?

How long is the usb cable?

Which way is airflow

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