Review on 🌀 Coolerguys 120x25mm 5V USB Rear Exhaust Blower Fan by Jeremy Meyer

This is a very quiet, powerful USB powered multi-purpose fan with 4 bars on rubber grommets. I have a built-in wall cabinet with a glass frame door to store my multimedia components. Although the back of the case is open and there is only a black mesh curtain on the back, it is warm all around the amp. This fan was small enough to be placed on top of the amp and blow air horizontally out the back of the case. The fan reduced the heat inside the case significantly, probably by 75% (estimate only). Since the fan is USB powered, it will be powered by the amp and will cycle on and off with the amp. While the fan doesn't look very good, it's black, making it almost invisible in a dark closet over a black amp. Although I figured I'd need 2 or 3 of these, I wanted to test the waters by just buying one. I've since found that one is enough to cool a room. I think there are many uses for such a fan, but I can guarantee its usefulness in a media cabinet.