--- 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: "$100.76" currency: USD in_stock: true category: "Ac Infinity" url: https://www.desertcart.ec/products/254325798-ac-infinity-multifan-s4-quiet-140mm-usb-fan-ul-certified store_origin: EC region: Ecuador --- # 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:** $100.76 **Availability:** βœ… In Stock ## Summary > πŸŒ€ Stay cool, stay ahead β€” the silent powerhouse your gear deserves! ## 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?** $100.76 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/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 - β€’ **Space-Savvy Design:** Detachable parts reduce height for tight spaces, ensuring seamless integration into any setup. - β€’ **Plug & Play USB Power:** Powered directly from USB ports on your AV gear or consolesβ€”no extra adapters needed. - β€’ **Whisper-Quiet Cooling:** Ultra-quiet 18 dBA noise level keeps your setup serene and distraction-free. - β€’ **Customizable Airflow Control:** Multi-speed controller lets you dial in the perfect balance of airflow and silence. - β€’ **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 to optimize cooling for gaming consoles, AV receivers, and computer components. Delivering 57 CFM airflow at just 18 dBA noise, it features a multi-speed controller and durable dual-ball bearings rated for 67,000 hours. Its flexible design allows for upright or flat placement, powered conveniently via USB, making it the essential silent cooling upgrade for any professional or enthusiast setup. ## 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. βœ“ Fast and free shipping βœ“ free returns βœ“ cash on delivery available on eligible purchase. ## 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 | #39,370 in Computers ( See Top 100 in Computers ) #260 in Computer Case Fans | | Brand Name | AC Infinity | | Compatible Devices | Amplifier | | Cooling Method | Air | | Customer Reviews | 4.6 4.6 out of 5 stars (3,100) | | Global Trade Identification Number | 00854759004365 | | Item Dimensions L x W x H | 25L x 140W x 140H millimeters | | Item Weight | 0.02 Pounds | | Manufacturer | AC Infinity | | Material Type | Rubber | | Maximum Rotational Speed | 2000 RPM | | Model | AI-MPF140A | | Noise Level | 18 Decibels | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | FBA_AI-MPF140A | | Power Connector Type | USB | | UPC | 854759004365 | | Unit Count | 1 Count | | Voltage | 5 Volts | | Wattage | 1.5 watts | ## Product Details - **Brand:** AC Infinity - **Power connector type:** USB - **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/713+w3dU6UL.jpg) ## Available Options This product comes in different **Size** options. ## 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? ## 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.ec/products/254325798-ac-infinity-multifan-s4-quiet-140mm-usb-fan-ul-certified](https://www.desertcart.ec/products/254325798-ac-infinity-multifan-s4-quiet-140mm-usb-fan-ul-certified) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-10-01*