Seems like a stupid questions, but I'm shopping for an external hard drive to network to my Airport Extreme and I've seen HDs with and without power switches. As a specific question do "non switched" HDs automatically turn on when I power up my mini and more generally I'm curious what the pros and cons are to each option. Here are some of my (semi-)educated guesses: I would think that with a "switched" hard drive I can save power by not turning it on when I don't need it, whereas a hard drive that automatically turns on with my Mini would always be on when my Mini is on regardless if I need it or not. On the other side, if I had a switched hard drive is that one more thing I have to turn on when I power up my Mini? Thanks for the info!