Review on LEMOISTAR USB Small Desk Fan - Powerful 4-Speed Airflow, Portable Table Cooling Fan, USB Powered, Whisper-Quiet Operation, 310° Adjustable Mini Personal Fan for Home Office Bedroom Car... by Jason Winkfield

I bought a second one because after a few months the first one turned out to be slower. Then I realized it was because it was plugged into a USB hub with other electronics. I use a spare that now sits in front of my window air conditioner since I found out it can help keep the unit's grille from freezing. Both fans actually work perfectly.