Summary: An overall good product, I would recommend. I've two on a media center PC that I wanted extreme quiet from. It has accomplished that and the fans are barely audible 10ft away, where I sit from the unit and TV. Pros: It is quiet on the lowest setting. It likely meets the stated 19dBA in the product listing. Alighted and mounted on my stock heat sync from a HP desktop purchased in 2010. (Unable to determine model.) Three manual settings for fan speed.