Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It works. What more is there to say?

I use this at the bottom of an old ATX mid-tower that was not meant to hold as many hard drives as I put in it. It's just sitting, unsecured, on the bottom of the case, below the original drive bays. The weight of just one drive is enough to stop any rattling in my situation.Absolutely effective in keeping twoHitachi Deskstar 3.5-Inch 2 TB Internal Hard Drive (0S02861)and one old 160GB Maxtor SATA II cool. It has a positive affect on the motherboard and processor, too. (I assume this is due to increase airflow within the case, as I did not increase the external intake/exhaust openings. It might be that the original fans were just inadequate.) The fan is quieter than the original case exhaust fan.My only problem with it is the blue LEDs are bright, but the set-up is in another room so I don't have to see it very often.