I have an Acer CB3-531-C4A5 Chromebook and would like to be able to watch movies. I see that there is an integrated Media player with Google Chrome OS and I did try to watch a movie on Amazon.com. That worked fine. My question is can I purchase an external CD/DVD drive that will work with the Chromebook so that I can watch movies from DVDs? I presume that I cannot as the external drive would require software for the interface and being there is no operating system on the Chromebook I would guess that I can not use an external CD/DVD drive. Is this correct?