--- product_id: 60829314 title: "AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan" brand: "ac infinity" price: "21975 Ft" currency: HUF in_stock: true reviews_count: 13 url: https://www.desertcart.hu/products/60829314-ac-infinity-multifan-s4-quiet-usb-cooling-fan store_origin: HU region: Hungary --- # 57 CFM airflow 18 dBA ultra-quiet noise 67,000 hrs dual-ball bearing lifespan AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan **Brand:** ac infinity **Price:** 21975 Ft **Availability:** βœ… In Stock ## Summary > πŸ†’ Stay cool, stay ahead β€” silence never looked this powerful! ## Quick Answers - **What is this?** AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan by ac infinity - **How much does it cost?** 21975 Ft with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/60829314-ac-infinity-multifan-s4-quiet-usb-cooling-fan) ## 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 - β€’ **Built to Last:** Dual-ball bearings rated for 67,000 hours ensure relentless, maintenance-free performance. - β€’ **Versatile Placement:** Compact 140mm size with rubber feet supports flat or upright positioning for optimal airflow. - β€’ **Precision Speed Control:** Multi-speed controller lets you dial in the perfect balance of cooling and silence. - β€’ **Plug & Play USB Convenience:** Powered by any USB portβ€”effortless integration with your AV gear and gaming consoles. - β€’ **Whisper-Quiet Cooling Power:** Ultra-quiet 18 dBA noise keeps your setup serene without sacrificing airflow. ## Overview The AC Infinity MULTIFAN S4 is a UL-certified, ultra-quiet 140mm USB fan delivering 57 CFM airflow at just 18 dBA noise. Featuring a 3-speed controller and durable dual-ball bearings rated for 67,000 hours, it’s designed to keep your gaming consoles, AV receivers, and computer cabinets cool with whisper-quiet efficiency. Its compact design and USB power make it the go-to cooling solution for professionals who demand reliable, silent performance. ## Description Product Description MULTIFAN Series Designed to quietly cool Xboxs, Playstations, Rokus, Apple TVs, receivers, modems, routers, DVRs, computers, and other audio video electronics. Key Features Multi-Speed Controller Inline switch enables you to optimize fan speed for various applications. Can be powered through USB ports found behind AV electronics and consoles. Ultra-Quiet Fans Designed to maximize airflow CFM to noise dBA ratio. Dual-ball bearings rated at 67,000 hours allows the fans to be laid flat or stand upright. Quality Approved Contains UL recognized axial fans under #E503903 in 2018 by Underwriter Laboratories. Archived in UL Online Certifications Directory. Silicone Rubber Feet Absorbs noise and surface friction caused by fan vibrations. Unused pieces can be detached to reduce overall height for tight spaces. Review: The Real Deal 5/5 - bought is companies stuff as it is designed for high end consumers. not us regular , rather the breaking bad type of high end consumers. hope you understand the analogy. so what is great. its quiet and high quality it will continue working without supervision especially if you are locked in or doing time. it will continue to work flawlessly behind your back and you don't have to worry about it. its silent and yes there is going to be some wind noise however there isn't going to be any whining noise. I use it to cool tp link deco be85 mesh wifi. the be 85 has inbuilt fans.however those fans were no good . I has to install this unit beneath each of those satellites . now never have had any reason to restart the mesh network. the medium speed is good in summer and I guess I can switch to low speed in winter to keep everything going. I the went ahead and bought the 2 fan version from same company to place under my virgin media hub 5 or 6 and the other end behind my tv ports unit. have had them for a months and I can say this unit is good quality. the power is supplied by usb a type plug which is connected to some usb a outlet on the powerstrips I have near appliances. the airflow is restricted unless you place something under the fan to raise it above around 1 inch above its plastic pucks to achieve silence and better airflow. it can not work with the plastic pucks alone. they will not let enough air flow beneath the fan to throw upwards. it needs clearance on at least the input side of 1 to 2 inches to achieve good blowing power. the 140mm size is good for be85 as it blows inside and around the body of the unit and man oh man is the tp link deco be85 big. so you can get an idea. it is as large as a 70kg persons thigh . so you get an idea that 140mm is a bit larger then a persons thigh . power consumption is ok however I didn't test it. seems the 2 fan 120 mm works as good as the 140mm single fan version. I would have preferred the 140mm version as it was single unit in comparison to the dual 120mm versions which I now have to place 1 below and 1 on top of the other be85 deco unit. definitely buy other stuff from this company . if you need an exhaust fan this is the company. if you need electronic cooling fan this is that company. they have a huge variety of stuff that carters to that class of people who we all hate however they are the ones making all the money after other bad businesses in the world. the 4 or 6 greatest money makers businesses right now running the world . and yes it definitely isn't owing a pizza chain or a restaurant or clothing store. Review: Great for Aquarium cooling πŸ‘πŸ‘ - These are great fans, purchased two for the top of my Axolotl tank as aquarium fans can be unreliable, noisy, poor quality, pricey for really good ones. These make no noise at all and have several speed settings, they really do the job well, I may hook them up to a controller in future. ## 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 | 1,984 in PC & Video Games ( See Top 100 in PC & Video Games ) 2 in Xbox One Cooling Systems | | Brand | AC Infinity | | Compatible Devices | Amplifier | | Cooling Method | Air | | Cooling method | Air | | Customer Reviews | 4.6 out of 5 stars 2,868 Reviews | | Global Trade Identification Number | 00854759004365 | | Item Dimensions L x W x H | 25L x 140W x 140H millimetres | | Item Weight | 0.02 Pounds | | Manufacturer | AC Infinity | | Manufacturer Part Number | FBA_AI-MPF140A | | Material | Rubber | | Max Rotational Speed | 2000 RPM | | Model Number | AI-MPF140A | | Noise Level | 18 Decibels | | Number of Items | 1 | | Power Connector Type | USB | | Power connector type | USB | | Product dimensions | 25L x 140W x 140H millimetres | | UPC | 854759004365 | | Unit Count | 1.0 count | | Voltage | 5 Volts | | Wattage | 1.5 watts | ## Product Details - **Brand:** AC Infinity - **Compatible devices:** Amplifier - **Cooling method:** Air - **Material:** Rubber - **Maximum rotational speed:** 2000 RPM - **Noise level:** 18 Decibels - **Power connector type:** 4-Pin - **Product dimensions:** 25L x 140W x 140H millimetres - **Voltage:** 5 Volts - **Wattage:** 1.5 watts ## Images ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 1](https://m.media-amazon.com/images/I/61prBJ2QyFL.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 2](https://m.media-amazon.com/images/I/61ybuv0XHWL.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 3](https://m.media-amazon.com/images/I/61qt+Y2APaL.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 4](https://m.media-amazon.com/images/I/71zRFtXlgvL.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 5](https://m.media-amazon.com/images/I/61aNPrhWKbL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can you chain s4 and s7 together please let me know?** A: Hello, Yes you can...as long you have the same series S fan models Best Regards **Q: How long is the usb cable?** A: About 185 cm. **Q: Are Ac Infinity turbo power adaptors available in Uk 3 pin socket, if so where could you get these?** A: I just plug mine into my iPhone charger, other brands are available :) **Q: Am planning on using this on a biltong box. has anyone used it for that? also, i can just plug this straight into the wall right? (with usb)** A: Used this fan on my biltong box (200litres) and it works brilliantly, and yes you can ## Customer Reviews ### ⭐⭐⭐⭐⭐ The Real Deal 5/5 *by T***L on 14 July 2025* bought is companies stuff as it is designed for high end consumers. not us regular , rather the breaking bad type of high end consumers. hope you understand the analogy. so what is great. its quiet and high quality it will continue working without supervision especially if you are locked in or doing time. it will continue to work flawlessly behind your back and you don't have to worry about it. its silent and yes there is going to be some wind noise however there isn't going to be any whining noise. I use it to cool tp link deco be85 mesh wifi. the be 85 has inbuilt fans.however those fans were no good . I has to install this unit beneath each of those satellites . now never have had any reason to restart the mesh network. the medium speed is good in summer and I guess I can switch to low speed in winter to keep everything going. I the went ahead and bought the 2 fan version from same company to place under my virgin media hub 5 or 6 and the other end behind my tv ports unit. have had them for a months and I can say this unit is good quality. the power is supplied by usb a type plug which is connected to some usb a outlet on the powerstrips I have near appliances. the airflow is restricted unless you place something under the fan to raise it above around 1 inch above its plastic pucks to achieve silence and better airflow. it can not work with the plastic pucks alone. they will not let enough air flow beneath the fan to throw upwards. it needs clearance on at least the input side of 1 to 2 inches to achieve good blowing power. the 140mm size is good for be85 as it blows inside and around the body of the unit and man oh man is the tp link deco be85 big. so you can get an idea. it is as large as a 70kg persons thigh . so you get an idea that 140mm is a bit larger then a persons thigh . power consumption is ok however I didn't test it. seems the 2 fan 120 mm works as good as the 140mm single fan version. I would have preferred the 140mm version as it was single unit in comparison to the dual 120mm versions which I now have to place 1 below and 1 on top of the other be85 deco unit. definitely buy other stuff from this company . if you need an exhaust fan this is the company. if you need electronic cooling fan this is that company. they have a huge variety of stuff that carters to that class of people who we all hate however they are the ones making all the money after other bad businesses in the world. the 4 or 6 greatest money makers businesses right now running the world . and yes it definitely isn't owing a pizza chain or a restaurant or clothing store. ### ⭐⭐⭐⭐⭐ Great for Aquarium cooling πŸ‘πŸ‘ *by R***R on 27 June 2020* These are great fans, purchased two for the top of my Axolotl tank as aquarium fans can be unreliable, noisy, poor quality, pricey for really good ones. These make no noise at all and have several speed settings, they really do the job well, I may hook them up to a controller in future. ### ⭐⭐⭐⭐⭐ Quite, efficient and highly effective! *by F***B on 8 June 2021* Fantastic product. Quality built and high class packaging. Easy and clear way to use. Solved my burning Amp inside a closed cabinet. I really can leave it ON on Hi mode and close the door knowing my amp will be on low temp for the whole day. Mind you that I couldn't use the USB input of my integrated amp, Arcam SA20 properly. It will run the fan off course but it will prevent the amp to go to sleep mode when there is nothing to play. Minor issue but it would be nice if it did work that way. Not the Fan’s fault, though. On Hi mode when the door is closed I can’t hear the fan at all even without any music playing. If the door is open may Lo mode for low volume works better although still on high volume you barely notice the fan. ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hu/products/60829314-ac-infinity-multifan-s4-quiet-usb-cooling-fan](https://www.desertcart.hu/products/60829314-ac-infinity-multifan-s4-quiet-usb-cooling-fan) --- *Product available on Desertcart Hungary* *Store origin: HU* *Last updated: 2026-06-10*