Multifan S5 Dual USB Mini - Computer Cooling Component AC Infinity - Free user manual and instructions

Product Type	USB Cooling Fan (Dual)
Brand	AC Infinity
Model	Multifan S5 (AI-MPF80A2)
Dimensions (Estimated)	8.4 x 4.4 x 1.3 in (213 x 112 x 33 mm)
Weight (Estimated)	0.5 lb (227 g)
Power Input	USB 5V, 500 mA (minimum per fan)
Fan Size	80 mm x 80 mm (dual fans)
Bearing Type	Dual Ball Bearings
Speed Controller	In-line 3-speed (Off/Low/Med/High)
Max Airflow (Estimated)	~20 CFM per fan (at high speed)
Noise Level (Estimated)	~25-30 dBA (at low speed)
Daisy Chain Capability	Up to 4 fans per USB port (6 with Boost Adapter)
Additional USB Port	Yes, for daisy chaining
Mounting	Removable silicone feet for flat or upright placement
Material	Plastic frame, rubber feet
Color	Black
Cable Length	~3 ft (91 cm) USB cable
Included Accessories	Dual USB fans with speed controller, silicone feet, mounting screws
Compatible Devices	AV components, receivers, DVR, network equipment
Safety Features	Dual fan guards, overheat protection (via USB current limit)
Cleaning	Wipe with dry cloth; avoid liquids
Warranty	1 year limited warranty
Certifications	CE, FCC, RoHS

Frequently Asked Questions - Multifan S5 Dual USB Mini AC Infinity

How do I power the Multifan S5?

Plug the USB connector into a standard USB port rated at least 500 mA. For outlet power, use the AC Infinity Boost Adapter (sold separately).

Can I connect multiple fans together?

Yes, you can daisy chain up to 4 fans using the built-in USB ports. With the Boost Adapter or Thermostat Fan Controller, up to 6 fans can be connected. Dual fans count as two.

How do I adjust the fan speed?

Use the in-line speed controller on the cord to select Off, Low, Medium, or High. All daisy-chained fans will adjust simultaneously; set those fans to High for proper chaining.

What is the noise level of this fan?

Noise level varies by speed. At low speed, it is approximately 25-30 dBA, suitable for quiet environments. Higher speeds produce more airflow but increased noise.

Can I use this fan to cool my AV receiver?

Yes, it is designed for cooling AV components such as receivers, DVRs, and amplifiers. Place the fan on top to exhaust hot air, or stand it upright for targeted cooling.

How do I clean the fan?

Disconnect the fan and wipe the exterior with a dry, soft cloth. Do not use liquids or submerge the fan. Clean the fan guard gently to remove dust.

Can I remove the rubber feet?

Yes, the silicone feet are detachable. For fans, unscrew them to save space. For blowers, pull them off carefully. Reattach by inserting and tightening.

What is the warranty period?

AC Infinity offers a 1-year limited warranty from the date of purchase against defects in material and workmanship. Contact support for replacement or refund.

Is the fan compatible with a thermostat?

Yes, you can connect it to the AC Infinity Thermostat Fan Controller (sold separately) for automatic temperature-based speed control.

What is the airflow of the Multifan S5?

Each 80mm fan delivers approximately 20 CFM at high speed. The dual fan setup provides combined airflow for effective cooling.

USER MANUAL Multifan S5 Dual USB Mini AC Infinity

Thank you for choosing AC Infinity. We are committed to product quality and friendly customer service. If you have any questions or concerns, please don't hesitate to contact us. Visit www.acinfinity.com and click contact.

Top-down view of a circular fan with 'AC INFINITE' branding and mounting holes (no text beyond logo)

Close-up of a CPU fan with visible internal grid pattern and 'AC INFINITY' branding (no additional text or symbols)

EMAIL

[e-mail]

WEB

www.acinfinity.com

LOCATION

Los Angeles, California

MANUAL CODE MF1606X1

PRODUCT

MULTIFAN S1

MULTIFAN S2

MULTIFAN S3

MULTIFAN S4

MULTIFAN S5

MULTIFAN S7

MODEL

AI-MPF80A

AI-MPB140A

AI-MPF120A

AI-MPF140A

AI-MPF80A2

AI-MPF120A2

UPC-A

854759004327

854759004495

854759004310

854759004365

854759004334

854759004341

MANUAL INDEX

Manual Index Page 5

Product Requirements ...... Page 6

Key Features Page 7

Product Contents Page 8

Silicone Feet Page 9

Powering Page 11

Speed Controller Page 12

Adding More Units Page 13

Applications Page 14

AC Infinity Products Page 16

Warranty Page 17

PRODUCT REQUIREMENTS

The MULTIFAN series is designed to cool various AV components by accelerating the intake of cool air and outtake of heat. Please make sure that the following requirements are met to ensure the cooling system will work effectively.

FULLY ENCLOSED CABINETS

The USB cooling fans are not compatible with fully enclosed cabinets. Air must be able to travel in and out of the cabinet. Please make sure that your cabinet has ventilation holes or is open at the front or back.

Two 3D cubes, one open and one closed, with blue paper clips on top (no text or symbols)

REAR EXHAUST MODELS

For the MULTIFAN S2 blower, the cabinet's ventilation holes should be at the rear. The hot air that the USB blower is exhausting should be directed out of the cabinet through its rear holes.

Illustration of a server rack with blue arrows indicating ports or connections (no text or symbols)

KEY FEATURES

Specially designed rubber feet helps keep the noise level down when the fan is vibrating against a hard surface

SPEED CONTROLLER

A speed controller located on the cord permits you to adjusts the fan's speed and power off the fan.

USB CONNECTOR

Allows the fan unit to be powered by a standard USB port, a common power source in home electronics.

DUAL BALL BEARINGS

Allows the fan unit to be powered by a standard USB port, a common power source in home electronics.

DUAL FAN GUARDS

Guards creates a barrier between a fan's blades and any foreign objects it may come into contact with.

ADDITIONAL USB PORT

Each fan contains an USB port. Up to four fans can be powered through a single USB or outlet source.

PRODUCT CONTENTS

MULTIFAN S1 AI-MPF80A

MULTIFAN S3 AI-MPF120A

MULTIFAN S4 AI-MPF140A

Close-up of a computer fan with visible blades and central hub (no text or symbols)

(1) Single USB fan with Speed Controller

MULTIFAN S5 AI-MPF80A2

MULTIFAN S7 AI-MPF120A2

Two identical square fan-shaped diagrams with circular patterns and central logo, no visible text or symbols.

(1) Dual USB Fans with Speed Controller

MULTIFAN S2 AI-MPB140A

Close-up of a CPU fan with visible internal blades and mounting holes (no text or symbols)

(1) Single USB Blower with Speed Controller

SILICONE FEET

FEET DETACHMENT - FANS

The fan's silicone feet can be detached to save space. Easily unscrew the feet from the fan's frame. Put the screw back in after to secure the fan guard.

Two mechanical components with threaded fasteners, one pinning and one rolling pin (no text or symbols)

FEET DETACHMENT - BLOWERS

The silicone feet is necessary to prevent the blower from scratching your electronics. It also reduces noise caused by airflow turbulence from underneath the blower. To remove, please pull on the bottom of the feet carefully.

Technical drawing of a circular mechanical component with radial slots and mounting holes (no text or symbols)

SILICONE FEET

FEET REATTACHMENT - FANS

If you want to install the feet back, simply insert the silicone feet through the guard and onto the fan's screw hole. Turn until you feel the screw tightening but do not overextend or the screw will slip through the rubber feet.

Mechanical assembly diagram showing a pulley and rotating component (no text or symbols)

FEET REATTACHMENT - BLOWERS

To install the silicone feet back into the blower, simply insert the top of the feet through the blower's screw hole. Then pull the top of the feet carefully until it slides through the screw hole.

Technical line drawing of a mechanical assembly with two mounting flanges and a central component (no text or symbols)

POWERING

USB PORT

Plug the fan's USB connector into a standard USB port. Please use a dedicated USB port rated 500 mA or higher, the standard on most electronics.

Please note that some electronics will have active power for their USB ports even when the electronic is powered off. This causes the fans to run even if the electronic device is powered off.

Diagram showing a cable connector inserted into a device panel with ports and buttons (no text or symbols present)

POWER OUTLET (SOLD SEPERATELY)

The AC Infinity Boost Adapter is sold separately and enables powering your fan through an outlet. It's designed to maximize the performance of our fans. Using the adapter will increase the fan's speed by up to 25%.

If the higher speed is too loud for your application, please use the speed controller to reduce the noise level.

Diagram of a plug-in socket connected to a cable, showing internal components and wiring (no text or symbols)

SPEED CONTROLLER

The speed controller located on the cord allows you to adjust the fan's speed from off to low, medium, and high. This enables you to set the fan to optimal noise and airflow levels for various environments.

Any fans that are daisy chained will also have their speed changed. Please make sure that the additional fans connected to the fan closest to the power source have their speed set on high.

ADDING MORE UNITS

DAISY CHAINING FANS

Up to four fans can be daisy chained to share the same USB port. Up to six fans can be daisy chained to share the same Boost Speed adapter or Thermostat Fan Controller, both sold separately. Dual fans such as MULTIFAN S7 count as two fans.

APPLICATIONS

TOP EXHAUST - FANS

The USB cooling fans can be placed on top of electronics that have vents on the top, such as a DVR receiver to help draw out hot air. Unused rubber feet can be detached to save space.

Front view of a wireless router with multiple antennas and ports (no visible text or labels)

TARGET COOLING - FANS

The USB fans can also stand upright to target a specific electronic, component, or area you wish to cool. They can also help circulate air in narrow places such as inside a computer desk or home theater cabinet by pushing hot air away.

APPLICATIONS

REAR EXHAUST - BLOWERS

The USB blowers are designed to help exhaust hot air from electronics housed in tight shelves in which a fan may not have adequate space to blow upwards. They should be placed on top of electronics that have ventilations holes on top such as receivers, amplifiers, and other audio video equipment.

Illustration of a two-panel air conditioner unit with cooling fan and control panel (no text or symbols)

Illustration of a dual-chamber electronic device with control panel and display (no text or symbols)

AC INFINITY PRODUCTS

AIRPLATE SERIES

The AIRPLATE series is designed to cool home theater and audio video cabinets. The fans be powered by USB port or power outlet. Includes an inline speed controller and Boost Speed Adapter. The fans can also be temperature controlled with an Advance Thermal Controller (sold separately).

PRODUCT

AIRPLATE S1

AIRPLATE S3

AIRPLATE S5

AIRPLATE S7

AIRPLATE S9

MODEL

AI-CFS80BA

AI-CFS120BA

AI-CFD80BA

AI-CFD120BA

AI-APS9

DIMENSIONS

4.6 x 4.6 x 1.3 in.

6.3 x 6.3 x 1.3 in.

8.4 x 4.4 x 1.3 in.

11.7 x 6.1 x 1.3 in.

17.5 x 6.1 x 1.3 in.

Circular perforated panel with checkered pattern, no text or symbols visible

AIRCOM SERIES

The AIRCOM series is an intelligent fan system designed to quietly cool receivers and other audio video components. S-series models include speed control and thermal trigger. T-series models feature a LCD controller with smart automated speed and thermostat functions.

Pure electrical circuit lines without any symbols

PRODUCT

AIRCOM S6

AIRCOM S7

AIRCOM S8

AIRCOM S9

AIRCOM T8

AIRCOM T9

MODEL

AI-ACS6

AI-ACS7

AI-ACS8

AI-ACS9

AI-ACT8

AI-ACT9

DIMENSIONS

11.6 x 6.3 x 1.5 in.

11.6 x 6.3 x 1.5 in.

17 x 13.5 x 1.5 in.

17 x 13.5 x 1.5 in.

17 x 13.5 x 1.5 in.

17 x 13.5 x 1.5 in.

WARRANTY

This warranty program is our commitment to you, the original purchaser, that each product sold by AC Infinity will be free from defects in manufacturing for a period of one year from the date of purchase. If a product is found to have a defect in material or workmanship, we will take the appropriate actions defined in this warranty to resolve any issues.

The warranty program applies to any order, purchase, receipt, or use of any products from AC Infinity. The program covers products that have become defective, malfunctioned, or expressively if the product becomes unusable. The warranty program goes into effect on the date of purchase. The program will expire one year from the date of purchase. If your product becomes defective during that period, AC Infinity will replace your product with a new one or issue you a full refund.

The warranty program does not cover abuse or misuse. This includes physical damage, submersion of the product in water, incorrect Installation such as wrong voltage input, and misuse for any reason other than intended purposes. AC Infinity is not responsible for consequential loss or incidental damages of any nature caused by the product. We will not warrant damage from normal wear such as scratches and dings.

If you are not 100% satisfied with this product, we will be happy to replace it or issue you a full refund. Please contact us!

COPYRIGHT © 2016 AC INFINITY INC. ALL RIGHTS RESERVED

No part of the materials including graphics or logos available in this booklet may be copied, photocopied, reproduced, translated or reduced to any electronic medium or machine readable form, in whole or in part, without specific permission from AC Infinity Inc.

www.acinfinity.com