--- product_id: 60829314 title: "AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan" brand: "ac infinity" price: "¥10727" currency: JPY in_stock: true category: "Ac Infinity" url: https://www.desertcart.jp/products/60829314-ac-infinity-multifan-s4-quiet-usb-cooling-fan store_origin: JP region: Japan --- # 57 CFM airflow Ultra-quiet 18 dBA noise 67,000-hour dual-ball bearing lifespan AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan **Brand:** ac infinity **Price:** ¥10727 **Availability:** ✅ In Stock ## Summary > 🌀 Stay cool, stay silent, stay ahead. ## Quick Answers - **What is this?** AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan by ac infinity - **How much does it cost?** ¥10727 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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 - • **Built to Last:** Dual-ball bearings rated for 67,000 hours ensure long-term, reliable performance. - • **Versatile Placement:** Lay flat or stand upright—fits seamlessly into any setup or AV rack. - • **Plug & Play USB Power:** Powered directly from your device’s USB port—no extra adapters needed. - • **Whisper-Quiet Cooling:** Keep your gear cool without the noise—perfect for focused work or gaming marathons. - • **Precision Speed Control:** Multi-speed controller lets you dial in the perfect balance of airflow and silence. ## 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 multi-speed controller and durable dual-ball bearings rated for 67,000 hours, it offers versatile placement options and USB-powered convenience, making it the top choice for cooling AV electronics, gaming consoles, and computer components. ## Description Buy ## 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 | 10,926 in PC & Video Games ( See Top 100 in PC & Video Games ) 1 in Xbox One Cooling Systems | | Brand | AC Infinity | | Compatible Devices | Amplifier | | Cooling Method | Air | | Customer Reviews | 4.6 4.6 out of 5 stars (3,107) | | Global Trade Identification Number | 00854759004365 | | Item Dimensions L x W x H | 25L x 140W x 140H millimetres | | Item Highlight | DVR Playstation Xbox Computer Cabinet Cooling | | 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 | | Number of Packs | 1 | | Power Connector Type | USB | | 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:** USB - **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/41VDR+boVUL.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 2](https://m.media-amazon.com/images/I/41VGBbW2pSL.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 3](https://m.media-amazon.com/images/I/41jN8PbON5L.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 4](https://m.media-amazon.com/images/I/419EIIVBUtL.jpg) ![AC Infinity, MULTIFAN S4 Quiet USB Cooling Fan - Image 5](https://m.media-amazon.com/images/I/41-xOaxQaPL.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 ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/60829314-ac-infinity-multifan-s4-quiet-usb-cooling-fan](https://www.desertcart.jp/products/60829314-ac-infinity-multifan-s4-quiet-usb-cooling-fan) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-29*