---
product_id: 254325798
title: "AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling"
brand: "ac infinity"
price: "Bs.733"
currency: BOB
in_stock: true
reviews_count: 4
category: "Ac Infinity"
url: https://www.desertcart.bo/products/254325798-ac-infinity-multifan-s4-quiet-140mm-usb-fan-ul-certified
store_origin: BO
region: Bolivia
---

# 57 CFM airflow 18 dBA ultra-quiet 67,000 hrs dual-ball bearing lifespan AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling

**Brand:** ac infinity
**Price:** Bs.733
**Availability:** ✅ In Stock

## Summary

> 🆒 Stay cool, stay silent—because your gear deserves the best breeze.

## Quick Answers

- **What is this?** AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling by ac infinity
- **How much does it cost?** Bs.733 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/254325798-ac-infinity-multifan-s4-quiet-140mm-usb-fan-ul-certified)

## Best For

- ac infinity enthusiasts

## Why This Product

- Trusted ac infinity brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Powerful:** Slim 140mm fan delivers a robust 57 CFM airflow, fitting seamlessly into tight cabinets and entertainment centers.
- • **Plug & Play USB Power:** Easily powers from any USB port on your consoles, receivers, or computer—no extra adapters needed.
- • **Whisper-Quiet Cooling:** Operate your gaming rig or AV setup without the noise distraction—just 18 dBA for stealthy airflow.
- • **Customizable Airflow Control:** Three-speed USB controller lets you dial in the perfect balance of cooling and silence.
- • **Durability Meets Flexibility:** Dual-ball bearings rated for 67,000 hours, designed to stand upright or lay flat for versatile placement.

## Overview

The AC Infinity MULTIFAN S4 is a UL-certified, ultra-quiet 140mm USB fan engineered for efficient cooling of electronics like DVRs, gaming consoles, and computer cabinets. Featuring a 3-speed controller, dual-ball bearings with a 67,000-hour lifespan, and a powerful 57 CFM airflow at just 18 dBA noise, it offers reliable, customizable cooling powered directly via USB.

## Description

Buy AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Silent, fast 3 Speed USB fan - Very silent and Low and Med speeds. Good airflow. Very high quality, well made product. Using this for my AVR located inside a narrow cabinet to improve coolng. USB cable is of sufficient length. Cons: The daisy chain USB female receptacle is exposed and sharp and could have caused scratches on my new AVR, so covered it with a piece of tape.
Review: Silent and Effective - I use them to cool my Desk NAS, they are silent, have good airflow and do not vibrate - perfect for my application.

## Features

- Ultra-quiet UL-certified USB fan designed to cool various electronics and components.
- Features a multi-speed controller to set the fan’s speed to optimal noise and airflow levels.
- Dual-ball bearings have a lifespan of 67,000 hours and allows the fans to be laid flat or stand upright.
- USB plug can power the fan through USB ports found behind popular AV electronics and game consoles.
- Fan Size: 5.5 x 5.5 x 1 in. | Airflow: 57 CFM | Noise: 18 dBA | Bearings: Dual Ball

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MWH4FL4 |
| Air Flow Capacity | 57 Cubic Feet Per Minute |
| Best Sellers Rank | #44,128 in Computers ( See Top 100 in Computers ) #323 in Computer Case Fans |
| Brand | AC Infinity |
| Brand Name | AC Infinity |
| Compatible Devices | Amplifier |
| Cooling Method | Air |
| Cooling method | Air |
| Customer Reviews | 4.6 out of 5 stars 2,850 Reviews |
| Global Trade Identification Number | 00854759004365 |
| Item Dimensions L x W x H | 25L x 140W x 140H millimeters |
| Item Weight | 0.02 Pounds |
| Item height | 5.5 inches |
| Manufacturer | AC Infinity |
| Material Type | Rubber |
| Maximum Rotational Speed | 2000 RPM |
| Noise Level | 18 Decibels |
| Power Connector Type | 4-Pin |
| Power connector type | 4-Pin |
| Product dimensions | 25L x 140W x 140H millimeters |
| UPC | 854759004365 |
| Unit Count | 1 Count |
| Voltage | 5 Volts |
| Wattage | 1.5 watts |

## Product Details

- **Brand:** AC Infinity
- **Power connector type:** 4-Pin
- **Product dimensions:** 25L x 140W x 140H millimeters
- **Voltage:** 5 Volts
- **Wattage:** 1.5 watts

## Images

![AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR Playstation Xbox Computer Cabinet Cooling - Image 1](https://m.media-amazon.com/images/I/61prBJ2QyFL.jpg)

## Questions & Answers

**Q: What is the rpm on these?**
A: 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.

**Q: How many watts does it consume?**
A: With the a/c adapter used, 1.8 watts. Used without the a/c adapter (as usb powered) .80 of a watt.

**Q: 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?**
A: 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.

**Q: 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?**
A: 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?

## Customer Reviews

### ⭐⭐⭐⭐⭐ Silent, fast 3 Speed USB fan
*by S***H on 31 August 2024*

Very silent and Low and Med speeds. Good airflow. Very high quality, well made product. Using this for my AVR located inside a narrow cabinet to improve coolng. USB cable is of sufficient length. Cons: The daisy chain USB female receptacle is exposed and sharp and could have caused scratches on my new AVR, so covered it with a piece of tape.

### ⭐⭐⭐⭐⭐ Silent and Effective
*by G***A on 6 October 2022*

I use them to cool my Desk NAS, they are silent, have good airflow and do not vibrate - perfect for my application.

### ⭐⭐⭐⭐⭐ Amazing
*by M***R on 25 September 2020*

Amazing quality, nil noise, very effective

## Frequently Bought Together

- AC Infinity MULTIFAN S4, Quiet 140mm USB Fan, UL-Certified for Receiver DVR PlayStation Xbox Computer Cabinet Cooling
- AC Infinity Turbo Fan Power Adapter, for MULTIFAN Series USB Fans
- AC Infinity MULTIFAN S3, Quiet 120mm USB Fan, UL-Certified for Receiver DVR PlayStation Xbox Computer Cabinet Cooling

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**Shop now:** [https://www.desertcart.bo/products/254325798-ac-infinity-multifan-s4-quiet-140mm-usb-fan-ul-certified](https://www.desertcart.bo/products/254325798-ac-infinity-multifan-s4-quiet-140mm-usb-fan-ul-certified)

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-04*