SKU: 33232255303

AC Infinity MULTIFAN S4 Quiet USB Cooling Fan 140mm

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Description

AC Infinity MULTIFAN S4 Quiet USB Cooling Fan 140mmDescription 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

Description
  • 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

  • Product Description: The ultra-quiet cooling fan can be positioned to stand upright or laid flat to cool various electronics and components. Features a multi-speed controller with power switch. Includes eight large anti-vibration rubber feet and a 6-foot power cord. The USB plug can be plugged into the USB ports found behind popular electronics such as receivers and video game consoles. Each unit contains an additional USB port, up to four fans can be daisy chained together to share the same power source. This fan system is CE and RoHS certified and contains premium dual-ball bearings, allowing it to be mounted horizontally or vertically. Contains AC Infinity axial fans ACX-FD1425(B)05W3 which meet UL-507 standards for safety under Underwriters Laboratories certificate E503903.

  • Speed Controller: The fan includes an in-line multi-speed controller with power switch to set the fan's speed to optimal noise and airflow levels for various environments.

  • Connecting Additional Units: For electronics and components that requires more airflow, each fan unit can daisy chain additional MULTIFAN S series fans. Up to four fans can share the same USB power source; and up to six fans can share the same thermal controller (sold separately). MULTIFAN S1, S2, S3 and S4 contains one fan, and MULTIFAN S5 and S7 contains two fans.

  • Applications: This ultra-quiet cooling fan is popular in a variety of electronics and components such as receivers, DVRs, video game consoles, modems, computers, amplifiers, and other audio video equipment.
    • Specifications
  • Product Identification
  • 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 Diameter: 0.17 in. (0.4 cm)
  • Cord Length: 72 in. (6 feet)
  • 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 degrees F
  • Fan Bearings: Dual Ball
  • Mounting Positions: Horizontal or Vertical
  • L10 Life Expectancy: 67,000 Hours
    • Data Sheets
  • Download the AC Infinity DC Fans UL C UL Recognized E503903: here
  • Download the AC Infinity MULTIFAN Series CE Certificate CTL1811096016 EC: here
  • Download the AC Infinity Fans RoHS Certificate SZXEC1900087001: here
  • Download the user manual: here
    • Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 33232255303

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    Amazon Customer
    Alexandria, US
    ★★★★★ 4
    Cool shirt
    Size: Large, Color: Navy Blue
    Great shirt for my husband. It doesn't make him hot. Keeps him cool.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 7, 2025
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    S. Thomas
    Grantham, US
    ★★★★★ 5
    I got one, the went back for different colors.
    Size: XX-Large, Color: Black
    Very comfortable. Very stylish. Damp dry works great.
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    Reviewed in the United States on January 3, 2026
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    Linda Serra
    Belleville, US
    ★★★★★ 5
    Good value
    Size: Medium, Color: Navy Blue
    Nice shirt. True to size.
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    Reviewed in the United States on January 2, 2026
    L
    Verified Purchase
    Love the dress
    New York, US
    ★★★★★ 5
    Awesome quality for the price
    Color: Black, Size: 8
    Ordered size 8 for my son first communion great fit for the price was excellent
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    Reviewed in the United States on May 4, 2026
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    This Is My Review Name
    Lexington, US
    ★★★★★ 5
    Perfect fit and great quality for the price
    This suit was perfect for my son. The fit was exactly as expected. The quality is excellent for the price—it feels well made and durable enough to last through multiple wears. It doesn’t feel cheap or flimsy at all. It also looks really good on him. Clean, polished, and great for formal events like weddings or parties. Overall, a fantastic value with great quality and a great fit.
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    Reviewed in the United States on May 9, 2026

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