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AC Infinity MULTIFAN S4, Quiet USB Cooling Fan, 140mm

AC Infinity

20 total reviews

Regular price
Price: $26.99 USD
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List Price: $0.00 USD
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Price: $26.99 USD
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Availability: 24 in stock

Estimated Arrival: Between Jun 24 and Jun 29.

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Why Buy From Grow Tents Depot
  • Ultra-quiet USB Fan: This fan is designed to cool various electronics and components. It is UL-certified and features a multi-speed controller to adjust the fan's speed for optimal noise and airflow levels. The dual-ball bearings have a lifespan of 67,000 hours and allow the fan to be laid flat or stand upright for flexible positioning.
  • USB Powered: The fan can be powered through USB ports found behind popular AV electronics and game consoles. Its compact size measures 5.5 x 5.5 x 1 inches, making it convenient for use in tight spaces. The USB plug ensures easy connectivity.
  • Airflow and Noise Level: This fan provides an airflow of 57 CFM, ensuring effective cooling. With a noise level of only 18 dBA, it operates quietly without causing disturbances.
  • Dual-Ball Bearings: The fan is equipped with dual-ball bearings which increase its lifespan and ensure smooth operation. This feature allows the fan to be mounted horizontally or vertically, depending on your needs.
  • Additional Power Source: Each unit contains an extra USB port, allowing up to four fans to be daisy-chained together to share the same power source. This feature provides convenience and flexibility for setting up multiple fans.
  • CE and RoHS Certified: This fan system meets CE and RoHS standards, ensuring its safety and compliance. With premium dual-ball bearings, it guarantees reliable performance.
  • In-Line Speed Controller: The fan includes an in-line multi-speed controller with a power switch. This controller allows you to adjust the fan's speed to achieve optimal noise levels and airflow in various environments.
  • Expandable Fan System: For electronics and components that require more airflow, multiple fan units can be daisy-chained together. Up to four fans can share the same USB power source, and up to six fans can share the same thermal controller (sold separately). This expandable system provides customizable cooling solutions.
  • Wide Application: This ultra-quiet cooling fan is suitable for use in a variety of electronics and components, including receivers, DVRs, video game consoles, modems, computers, amplifiers, and other audio-video equipment.
  • Specifications
  • Manufacturer: AC Infinity Inc.
  • Product Name: MULTIFAN S4
  • Product Model: AI-MPF140A
  • UPC Code: 854759004365
  • Product Dimensions
  • Total Dimensions: 5.5 x 5.5 x 1.0 in. (14.0 x 14.0 x 2.5 cm)
  • Hole to Hole Distance: 4.92 x 4.92 in. (12.5 x 12.5 cm)
  • Screw Hole Size: Ø 0.17 in. (Ø 0.4 cm)
  • Cord Length: 72 in. (6 feet)
  • Product Performance and Technical Specs
  • Total Airflow: 57 CFM
  • Total Noise: 18 dBA
  • Speed: 1200 RPM
  • Operating Voltage: 3 to 7V DC
  • Power: 1.5 W
  • Current: 0.3 A
  • Wall Adapter Input: 100 to 240V AC
  • Static Pressure: 0.84 mm-H2O
  • Operating Humidity: 35 to 85% RH
  • Operating Temperature: 0 to 158°F
  • Fan Bearings: Dual Ball
  • Mounting Positions: Horizontal or Vertical
  • L10 Life Expectancy: 67,000 Hours
  • Data Sheet
  • Download the Product Manual: here
  • Download the RoHS Certification: here
  • Download the UL Certification: here
  • Download the CE Certification: here
  • Price Match Guarantee
  • Shop safe knowing that Grow Tents Depot offers the lowest prices on all of our products - all the time - guaranteed!
  • We work very hard to ensure that we always have the absolute best prices online, so we make this guarantee knowing that if you find a lower price somewhere else, we will match or even beat our competitor's price! Simply reach out to us with a screenshot and link of our competitor's price (including shipping) and let us make you an offer! If you have already purchased with us and you find a better price within one week of your order, let us know and we will issue a refund for the difference!
  • Our 100% price match guarantee has some limitations:
  • -Promotions such as rebates, "buy one, get one free", and other discounts are not eligible.
  • -The item must be in stock on the competitors website when you request your price match.
  • -The competitor must be an online store and may not have a retail location.
  • -The website cannot be a discounter or auction website (e.g. Amazon, eBay, Overstock, etc.).
  • -The competitor must be an authorized retailer of the product in question.
  • -The price match applies to the item price and the shipping charges but excludes sales tax.
  • -On rare occasions, we reserve the right to refuse a price match if we would incur a loss.
  • Get growing today!
  • Shipping, Returns, and Cancellations
  • Order Confirmation:
  • As soon as your order is placed, an order confirmation e-mail will be sent to you. This means that your order has been successfully entered into our system and that we have pre-authorized your payment method for the purchase. In rare cases, if your product is unavailable or delayed, we will contact you and see if you would like to either wait for your item(s) to become available, change your order, or simply be refunded for your cancelled item(s). If your item(s) are immediately available, we will process your order and arrange for soonest possible shipment. Please note that once the order is processed we are unable to change the shipping address.
  • Order Shipment:
  • We offer FREE SHIPPING on all orders and currently service the lower 48 states. Most items are shipped within 1 to 3 business days and shipping time is typically between 1 to 7 business days. There are some products that have a slightly longer lead time and this will be indicated on the individual product pages if applicable. Once your order has shipped, we will send you the tracking information as soon as it becomes available. If a week or more has gone by and you still have not received the tracking information (or the number is not working), please reach out to us right away at If you are in Alaska, Hawaii, or outside of the US and would like to place an order: we may be able to ship to you, but you will need to reach out to us for a custom shipping quote.
  • Cancellations and Refunds:
  • If you need to cancel your order, please reach out to us as soon as possible. Cancelled orders are subject to a 5% administrative fee (for credit card, debit card, Amazon Pay, Coinbase, and Facebook orders) or an 8% administrative fee (for Shop Pay Installments and Sezzle orders). We can accommodate most cancellation and refund requests, however if a product has been arranged to ship or has shipped, then the item will be treated as a return and will potentially be subject to return shipping costs and restocking fees. Any refunds that may be issued will only be issued to the original payment method used when placing your order and only after the return has been confirmed to be received back in its original condition.
  • Returns:
  • Please see our full return policy at the footer of this page for brand-specific details. A restocking fee of 5-25% may apply on returns within the dates of the brand-specific return policies. If you would like to proceed with a return, please reach out to us to receive the precise return instructions and clarification on the restocking fees for your item(s).
  • Warranty
  • Grow Tents Depot only sells brand new products, never used, and therefore all items come with full manufacturer warranties if offered. Please note that Grow Tents Depot is not responsible for replacing or repairing your product while under warranty as this is the manufacturer's commitment to you. However, Grow Tents Depot would be happy to assist you in getting your product repaired or replaced by coordinating with the manufacturer.
  • If you would like us to assist with a warranty claim, please reach out to support with the following information:
  • Your order number.
  • Your shipping address.
  • A brief description of the issue.
  • Any photos or videos demonstrating the issue.

  • Customer Reviews

    Based on 20 reviews
    William K.
    It's A Fan, It's Quiet

    I use it to keep my wireless 1 Gb wireless router cool and happy. It does so quietly and unobtrusively.