I have a large collection I would like to RIP. I'd be using handbrake and a mac mini 2012 i7, I think I saw a comment that mentioned loading a bunch of DVD's in the queue, then starting it before you go to bed. I tried it with two dvd's and while it worked, handbrake looked like it went nuts. Am I doing something wrong with the settings? Also what is the limit to how many USB DVD drives you could load up? I am guessing you need a powered hub, but USB2 or USB3? Seems too easy to just stack a bunch of DVD drives and let them RIP, seems like there must be a catch.