I am amazed at how quiet this unit is. I replaced an old unit of similar design that was much louder. The red lights are barely noticeable compared to the last one, which had nasty blue lights flashing all over it. My entire laptop became quieter as the laptop fan stopped working as soon as I turned on this cooler. I also like the design of the USB port. I had to re-solder a cheap pass-through USB connector to my last one. It didn't even last as I ended up re-establishing all the USB connections set up on the previous device. This style may only require a new cable; but there is an easy fix when it happens. The switch is handy so it can be turned off, but the adjustment range for lighting and fan intensity (speed and brightness) is narrow. I'd like a separate light and fan switch, but it's not that important. Lights do not interfere with this device. They also let me see that the fan is working, which I like. In general a good product.
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