Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Drops A/V cabinet temps by 20

I have an enclosed a/v cabinet and was concerned about internal temps when running a PS3, receiver and other components. I put my outdoor remote temp sensor in the cabinet and routinely saw 110F+ temps, so I purchased this and plugged it in to the PS3 USB port and saw a reduction of ~20. The fan is quiet enough to not be noticed over the sound of other component fans running and the sound is a non-issue when anything is playing. You can plug it in to anything with a USB port but since my PS3 seems to be the big heat generator, I chose to plug it in there. It works very well and is a much cheaper and simpler solution than hard mounting a 120mm exhaust fan and wiring in a thermometer. I'm going to buy another one so I can put a laptop in the cab as well. I recommend 100%.