I got this as a cart filler and it does exactly what it says on the tin, 95% of users will never need this type of cooling with these router chips work up to 120 degrees. My ac88u went from about 80c to 59-63c with a silent fan, ax88u 50-54c, but it can get very noisy when it goes to max, but you never need it. as it causes more dust. Every week or two you will need to brush over the top. I guess I play around with it and turn on the fan when I get bored.
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