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AC Infinity MULTIFAN S2, Quiet USB Cooling Blower, 120mm

AC Infinity

13 total reviews

Regular price
Price: $26.99 USD
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Price: $26.99 USD
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Availability: 18 in stock

Estimated Arrival: Between Jun 16 and Jun 21.

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Why Buy From Grow Tents Depot
  • Quiet UL-Certified Blower: Engineered to be positioned atop various electronics to extract heat. The blower features a multi-speed controller, guiding the fan's speed to favorable noise and airflow levels. The low-profile design redirects the air to the rear, making it perfect for applications with restricted clearance. The blower can be powered via USB ports, commonly found behind popular AV electronics and game consoles. The dimensions of the blower are 4.7 x 4.7 x 1 inches and it boasts an airflow of 35 CFM, making noise of only 17 dBA. It uses dual ball bearings for operation.
  • Product Details: This quiet USB MULTIFAN S2 blower can be mounted over varied electronics and components. It comes with a six-foot power cord containing a 5V DC USB plug that powers the blower through any USB port. The package includes four silicone fan mounts affixed to the bottom of the blower to buffer vibrations and reduce noise. Each unit features an extra USB port, allowing up to four blowers to be interconnected to share a single power source. The blower is CE and RoHS certified, has a 67,000-hour lifespan, and contains premium dual-ball bearings. This allows it to be mounted in either horizontal or vertical orientation. The unit encompasses AC Infinity axial fans ACX-FBD1225(B)05W5, meeting the UL-507 safety standards under Underwriters Laboratories certificate E503903.
  • Speed Controller: The blower comes with an in-line multi-speed controller with a power switch. This facilitates setting the fan's speed to an ideal noise and airflow level depending upon the environment.
  • Connecting Additional Units: For electronics and components that call for increased airflow, each fan unit can cascade additional MULTIFAN S series fans. A total of four fans can share the same USB power source. Products like MULTIFAN S1, S2, S3, S4, S5, and S7 have one fan, while others have two fans.
  • Applications: This ultra-quiet blower is designed to pull air from the base and push it out the back, making it perfect for use with electronics and components placed in a cabinet or rack that has limited clearance space. The blower is ideally suited for modems, routers, receivers, amplifiers, gaming consoles, home theatres, AV cabinets, and entertainment media centers.
  • Specifications
  • Manufacturer: AC Infinity Inc.
  • Product Name: MULTIFAN S2
  • Product Model: AI-MPB140A
  • UPC Code: 854759004495
  • Product Dimensions:
  • Total Dimensions: 4.7 x 4.7 x 1.0 inches (12.0 x 12.0 x 2.5 cm)
  • Cord Length: 72 inches (6 feet)
  • Product Performance and Technical Specs:
  • Total Airflow: 35 CFM
  • Total Noise: 17 dBA
  • Speed: 1200 RPM
  • Operating Voltage: 3 to 7V DC
  • Power: 1.05 W
  • Current: 0.2 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 13 reviews
    Will H.

    I was looking for a simple solution to help move trapped hot air from above my Xbox Series X, out of the IKEA Kallax cabinet I have it in. With such limited space (~1.5 between console and shelf ceiling), the Multifan S2 fit the bill- PERFECTLY.

    Coupled with the optional thermal trigger controller, and plugged into a rear USB port on the console, the setup is elegantly simple AND effective. I went ahead and built a simple mount to attach the Multifan S2 to the shelf ceiling, centered above the console, but Im confident it would work just as well sitting directly on top of the console.

    I have the fan speed controller set to High and unless I really listen hard (I sit ~8 feet from the console/fan), I cant hear it over the compressor/fan on my fridge 20 feet away!