content: Mine did help keep my Dell Inspiron 8500 from getting too hot, but the USB cable leaves a lot to be desired. About a month after getting mine, the fans stopped working. I found the problem to be in the silly on/off switch they stuck in the middle of the cable. I removed the switch and spliced the cable. However, now, approximately six months after I bought the unit, it appears that a wire has broken near the USB plug, and as far as I know, replacement USB plugs aren't available. I guess now it's buy a 5V AC adaptor and wire into the thing. Needless to say, I'm not impressed.