Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good value and performance; no power switch or software.

So far (less than one week), the drive works well, is very quiet, and only gets a bit warm. This is compared to the hot, loud drive it replaced (LaCie Porsche 500GB that died after the click of death at 18 months). There is no power switch but that seems to be OK so far. Amazon removed the pics with the power switch, but those pics are still on Buy.com and other sites. WD told me they are making this drive with no switch "because you don't need one." Hmmm....connected to my Apple Airport Extreme as a Time Machine drive, so I will see if really does shut off and on like they say....otherwise, best value in a 500gb. Oh, it comes with ZERO software and needs to be reformatted for a Mac with Disk Utility (easy stuff).