Is the daisy chain port full, unswitched usb power, or is it controlled via the speed control? as it's located after the speed switch it wasn't clear.

The port is controlled by the switch. I got 4.9V on H, 4.4V on M, lower than 4V on L and no output on OFF.

can you use with xbox one,what is the USB type?

I put one of these on my Xbox One and it works great. It isn't loud at all and keeps my system cooler. It is a standard usb connection (not a mini or micro USB).

Will this centrifugal fan work better than the equivalent axial version behind a HEPA filter? I heard centrifugal fans work better with pressure drops

centrifugal fans work better when a pressure difference is necessary ie your HEPA filter, this fan will work better than an axle fan and as the filter starts clogging up will continue to pull air longer

Can you power the blower on full speed with the female usb port? i know that it is designed to power an additional fan.

No, the male usb is inline with the switch, that's how you connect it.

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

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

Product ID: 225916688

Details

Brand
AC Infinity
Cooling Method
Air
Power Connector Type
3-Pin
Voltage
5 Volts
Wattage
1.2 Watts

🌀120mm high-efficiency airflow

🔇Ultra-quiet 17 dB noise level

🎛️Adjustable speed control

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฿3874

Duties & taxes included

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️ Stay Cool, Stay Ahead: The Silent Breeze Your Tech Deserves

SLEEK COMPACT DESIGN - Lightweight and unobtrusive, this fan fits seamlessly into your AV cabinet or gaming station, enhancing airflow without clutter.
PRECISION COOLING POWER - 120mm blower fan engineered for optimal airflow to keep your AV gear chill and performing at peak.
WHISPER QUIET OPERATION - At just 17 decibels, enjoy powerful cooling without the distracting noise—perfect for focused work or gaming sessions.
CUSTOMIZABLE SPEED CONTROL - Tailor your cooling intensity with easy-to-use speed adjustments, ensuring your devices stay cool without overkill.
PLUG AND PLAY USB CONVENIENCE - Powered by a simple 5V USB connection, it’s effortless to integrate into any setup—no extra adapters needed.

The AC Infinity MULTIFAN S2 is a 120mm USB-powered blower fan designed specifically for cooling AV receivers, DVRs, gaming consoles, and modems. Operating at a whisper-quiet 17 decibels and featuring adjustable speed control, it delivers efficient airflow to prevent overheating while maintaining a low noise profile. Lightweight and easy to install, it’s the perfect upgrade for professionals and gamers seeking reliable, customizable cooling solutions.

Specifications

ASIN	B012CL2V3I
Best Sellers Rank	#99,986 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #512 in Case Fans
Brand	AC Infinity
Brand Name	AC Infinity
Compatible Devices	Gaming Console
Cooling Method	Air
Country of Origin	USA
Customer Reviews	4.7 out of 5 stars 1,351 Reviews
Item Weight	8 Ounces
Manufacturer	AC Infinity
Model Number	AI-MPB140A
Noise Level	17 Decibels
Number of Items	1
Part Number	AI-MPB140A
Power Connector Type	3-Pin
UPC	854759004495
Unit Count	1.0 Count
Voltage	5 Volts
Wattage	1.2 Watts

Reviews

A**O

3.01.2026

A**ー

9.11.2025

C**A

19.01.2021

R**D

31.10.2025

F**R

6.10.2020

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