Review on 🌀 YupYay 120mm Quiet Cooling USB Fan with Blue LED - Silent Transparent Desk Fan, Compatible with PC Computer, Router, Modem, Receiver, DVR, Playstation, TV Box, and More Electronics by Robert Blanton

I only had this fan for one purpose. Cool down the mini PC that has become hot. Damn, the idle temperature was almost 50 degrees, under load or even with the Windows update it rose to 90 degrees. So I removed the cover, put this fan on it, plugged it into the USB port and the VIOLA cooled down immediately. I ran Cinebench on the Mini to load it up and with this fan the temperature dropped about 25 degrees. I hit 66c and my mouth dropped. WOW WHAT A DIFFERENCE. What's good is that this fan has grilles on both sides, so don't worry about banging your fingers.