5 best usb powered fans

• Clip and table desk type, perfect fan for the office, home, dorm, study, library, games room
• It is extremely compact, its size is about 8.1 x 7.8 x 4.2 inches, and the usb cable length is about 1.5 meters
• With quiet operation, you can keep this by your bedside and sleep comfortably without the noise bothering you
• 4 inch blade and 6 inch frame saves your desk space; adjust the direction of the wind with 360° up and down, left and right adjustment, you can enjoy the cool wind from any directions
• Note: This fan just powered by USB, it needs plug in usb to use, connects to any PC/laptop via USB or can connect to a AC port with a USB AC adapter( not include)

User questions & answers

Question:	Will this plug into a macbook air
Answer:	As long as there is a USB plug in
Question:	Can I plug this on PS4's USB
Answer:	Yes.
Question:	can i clip this onto my treamill to keep me cool
Answer:	Without any knowledge of the treadmill construction, I can say that I clip it onto my desk top which has a width of 1-1/4 inches. Of course you will need an USB port to power it or may be without power it can serve as a stationary distraction. One of the novelty chargers with an USB port will serve but use caution with dangling cords whilst walking on the treadmill.
Question:	Am I able to clip this on to a bed
Answer:	Yes，As long as the thickness of the bed board within 4 cm(1.57inch).

Product features

Clip and table desk type, perfect fan for the office, home, dorm, study, library, games room

The Keynice mini clip and desk USB personal fan designed for personal space use, this fan has can be placed or clipped to your desk or table for cooling in any situation.

This fan features two powerful speed settings, and a lightweight, stylish, and compact design.

2 Speed Settings

Select your level of comfort with High or Low airflow.

Adjustable-Tilt Fan Head (manually operated)

Tilt and adjust your fan head for focused cooling power.

2 in 1 - Clip and Desk Fan

4 inch blade and 6 inch frame saves your space, it is designed for personal space cooling and is ideal for use in bedrooms, office cubicles, or dorm rooms

Note: This fan input power is DC 5V, so if you need to use in the car or golf cart, please make sure its usb output is DC 5V, or it has a converter to conver it to 5V.

Quiet Fan

THis KEYNICE Clip Fan has 2 speed, you can set a speed as you like to enjoy the wind!

First gear, the wind is soft, and it's quiet, so it won't disturb sleep.

Second gear, the sound it's also can be accept for it do not bother your colleague's work.

USB plug in fan

This fan can be powered by any USB power service, such as power bank, laptop and usb adapter( not included).

Note:

It's not a chargeable fan, so it need to plug in power to use.

360 degree rotation fan

KEYNICE USB Desk Fan can be manually rotate about 360 degree vertical and horizontal!

Product specifications:

Input voltage: DC 5V USB Cable

Power:1-3.5W

Color: Black, White, Pink, Blue

Package includes:

1 x Keynice USB clip and desk personal fan

1 x 1.5m USB cable

• Ultra-quiet UL-certified USB fans 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.
• Dimensions: 4.7 x 4.7 x 1 in. per fan | Total Airflow: 104 CFM | Total Noise: 19 dBA | Bearings: Dual Ball

User questions & answers

Question:	Does the dual 120mm model come with an AC adapter
Answer:	Bad answers, or not up to date. This is USB powered but there is a dual 1200mm fan AC version , same company for a few bucks more.
Question:	Is the cord distance between the two fans adjustable
Answer:	No the distance between the fans is not adjustable. You would need to daisy chain a second set of fans, or a single fan with a USB power connector to give you more distance between fans.
Question:	What is the cord length between the fans please? Thanks
Answer:	Hi Randy,Thank you for your inquiry. The cord length is 2.5 feet.Please let me know if there are any questions or concerns and I'll be happy to help. Thank you and have a great day!Kind regards,Bernard MAC Infinity
Question:	how much power do they pull? im worried about battery drain
Answer:	Hi Benjamin,Thank you for your inquiry. The fans pull about 102 CFM. The fans require a minimum of 5V of DC power. If you have any questions or concerns, please feel free to contact me and I will be happy to help.Kind Regards,Jeremy LAC Infinity Inc.

Product features

Multi-Speed Controller

Inline switch enables you to optimize fan speed for various applications. Can be powered through USB ports found behind AV electronics and consoles.

Ultra-Quiet Fans

Designed to maximize airflow CFM to noise dBA ratio. Dual-ball bearings rated at 67,000 hours allows the fans to be laid flat or stand upright.

Quality Approved

Contains UL recognized axial fans under #E503903 in 2018 by Underwriter Laboratories. Archived in UL Online Certifications Directory.

Silicone Rubber Feet

Absorbs noise and surface friction caused by fan vibrations. Unused pieces can be detached to reduce overall height for tight spaces.

• 💛[The Biggest USB Fan] This desk fan reaches the limited size that a 5V USB power source can drive. With OPOLAR's latest dynamic technology, the fan produces so much air and runs very quietly. No battery.
• 💙[High Compatibility] Compatible with computers, laptops, portable chargers and other devices with usb output. Powered Only by a USB cable. For better performance, 2A USB port is highly recommend.
• 💚[Power Saving] Goodbye AC fans, this DC 5V USB fan only consumes 4 watt on the highest speed. This USB fan saves around 95% power than traditional AC fans.
• 💜[Metal Construction and Quiet Plastic Blades] We use the industrial grade metal frame to enhance the construction and plastic blades to lower the noise. Two speeds for your choice.
• 💖[Adjustable Tilt ] The sturdy metal frame could be adjusted 360 degree up and down, adjusting the wind direction easily according to your height or position.

User questions & answers

Question:	How long is the usb cord
Answer:	UGT-ST644R will work with/recognize SATA II or SATA III drives and comes with 2 SATA II/III data cables, but supports up to 4 drives.
Question:	When I unplug this, it won't work. Doesn't the usb cord charge this
Answer:	The UGT-ST644R comes with 2 SATA I/II/III cables for data connections. You must have separate power cables for each drive connected, internal or external, SSD or HDD drives.
Question:	How many amps
Answer:	Must have st least 4x (or 8x or 16x) PCIe 2.0 slot or PCIe 3.0 slot, it will not work with x1 slots.
Question:	Will a power pack of 20000 mAh run this fan? And for how long
Answer:	YES! this card works great with Ubuntu 12.04. It has onboard hardware RAID that I haven't tested but mdadm gets the job done.

Product features

Upgraded 9 Inch Frame Desktop USB Fan

OPOLAR 9 Inch desk fan :

never stops as it is powered by USB fan

less than 40dB and keep a quiet environment for your work and sleep

great airflow which cool you down very quickly

Note: For better performance, 2A USB port is highly recommend to use.

Ultra Quiet

Easy to clean

Adjustable-Tilt Fan Head (manually operated)

The sturdy metal frame could be adjusted 360 degree up and down;



2 speed settings with a toggle switch. Steel base with adjustable, non-skid grips.

One speed:950RPM

Two speed:1520RPM

• 【Exquisite Design】: ONLY 6 oz! Compact lightweight design for maximum convenience. Small and lightweight personal fan provides cooling air circulation in any desired directions with 360 degree tilt rotation.Perfect for use in home,car, office, desktop, camping, or travel.
• 【Ultra-Quiet】:Smartdevil usb desk fan uses a silent structure which is engineered to be ultra-quiet while delivering high airflow. Better accompany your work or sleep without disturbing you.
• 【Three-speed Adjustable】: Low/medium/high speed level. Adjust appropriate fan speed by pressing the power button repeatedly. Third gear which can be variable speed design provides you more choices in different temperature environment.
• 【High Compatibility USB-powered 】:The SmartDevil USB fan is powered by USB and compatible with PC/laptop, power bank, AC adapter, car charger and other USB-enabled power supply.USB fan is energy-saving and environmentally friendly. (Note:This fan does not carry a battery)
• [Customer Service]: Provide free online customer service. We promise to answer within 24 hours . If you have any questions, please feel free to contact us, we are willing to answer your questions.

User questions & answers

Question:	What is the cfm? thats the most important data
Answer:	Approximately 8" x 7.5" x 3"
Question:	How can this be rechargeable..if it "has no battery
Answer:	Hi - I purchased two of the Vornado FIT Personal Air Circulator Fans. Not sure what the CFM are but one blows slightly more than the other one. The one barely blows and I ended using it to put over our heater vent to help circulate the heat since the fan does nothing to help keep you cool. I had original purchased for traveling.
Question:	How quiet is in each different mode
Answer:	no
Question:	How long does it hold a charge
Answer:	Just pull the blade up. It does come off.

Product features

SmartDevil Mini USB Desk Fan

SmartDevil Mini USB Desk Fan has a small body but is powerful, and the strong and supple wind makes you feel more comfortable.

Not only is it quiet,but also it has 3 different speed settings and easily plugs into a USB.It also provides cooling air circulation in any desired directions with 360 degree tilt rotation.

With this little cute fan, you will never feel hot again. Enjoy a cool summer anytime, anywhere.

Rubber anti-slip base

The rubber bottom base ensures more stability and no vibration. Keep the fan stay firmly on the desk.

Ultra-Quiet

This small usb fan works under 50dB, no worry of annoying noise.Recommended to use on a nap during work and home.

Available in three colors

Pink, White, Blue, three colors to choose from, to satisfy your pursuit of color.

• 🌌【Small but mighty】Compared with the old version USB metal fan, this fan pushes packs a huge punch and cools you down quickly.Don't look it down because of its small appearance. You will surprise by how super strong the airflow is.
• 🤫【Quiet Operation】Although the fan is very strong, even in high speed the noise is less than 50dB. It is a quiet and good friend when working and sleeping. Ideal for your desk, office bedroom Use.
• 💲【USB Powered】 Powered by a 4.9ft USB cable, compatible with computers, laptops, power banks, wall chargers and any other USB-enabled power supply. USB fan is energy-saving and environmentally friendly.
• 💧【Adjustable & Easy to Clean】 Fan head is able to tilt from 0 to 40 degree to direct the airflow to where you want. Removable front cover is easy to remove for cleaning the fan blade.
• 👍【Life Saver on Hot Summer】Save you from hot flashes. This summer will be more pleasant.

User questions & answers

Question:	I still believe Opolar the Rpms is 2350 , 2750, 3400 not 1800,2100,2400 that’s incorrect why did you change the speeds
Answer:	It puts out a lot of air at low setting so I wouldn't worry about nitpicking RPM speeds. Also the fan hum is quiet at low and bearable at medium speeds.
Question:	Does the fan turn off after certain amount of time
Answer:	Dear Diana, Thanks for contacting OPOLAR. I am sorry that the fan will not turn off after certain amount of time. I hope it helps. Regards, OPOLAR Customer Service
Question:	How long does it last without plug in to power source
Answer:	There's no built-in rechargeable battery, but you can connect the fan to a rechargeable power bank. That will make it portable. I checked the fan's power consumption using a USB tester. At low speed, it consumed from 0.2-0.3 amps, at medium speed 0.45-0.55 amps and at high, between 0.85 and 1 amps. You can get a 5000mah power bank for around $10-15 and experiment how long the fan lasts at different speeds (higher fan speeds will run down the power bank faster).
Question:	Is it quiet enough to stream with
Answer:	I would say so. On low in a quiet room it is pretty quiet and you can feel air from more than a meter away. High has a little motor noise but still a bit less than an 18" pedestal fan. Medium is in between. The air flow is very directional, aiming it at your stomach gives low air flow to your face, which could help with any noise at your mic. Nice little fan.

Product features

OPOLAR Small USB Desk Fan

Feel hot when working or studying on front of a computer? Wanna a small fan but with powerful airflow?

Then go to OPOLAR newly designed USB fan. It will be a must of your office supply. Not only is it quiet,but also it has 3 different speed settings and easily plugs into a USB. To direct the air to your face by adjust the fan head.

With this little cute fan, you will never feel hot again. Farewell to office heat.

Single Button

Only equipped with one button, it is easy and simple to operate.

Easy to Clean

The front cover is removable, which is very helpful to clean the fan blades.

1. Put both of your hands on the fan cover and press it anti-clockwise.

2. Put both of your hands on the fan cover and press it clockwise.

Stable

Four rubbers on the base to reduce the noise and vibration and protect any scratches on your table.

Long USB Cable

The USB cable is 1.5 meters/ 4.9 feet long. It is enough for office use.

USB Powered

USB power offers wide range of options: car adapter, phone brick, USB portable station, laptop, anything nowadays really